diff --git a/src/Symfony/Component/Messenger/Transport/Serialization/Normalizer/FlattenExceptionNormalizer.php b/src/Symfony/Component/Messenger/Transport/Serialization/Normalizer/FlattenExceptionNormalizer.php
index e68927559fac1..19b2a7f457273 100644
--- a/src/Symfony/Component/Messenger/Transport/Serialization/Normalizer/FlattenExceptionNormalizer.php
+++ b/src/Symfony/Component/Messenger/Transport/Serialization/Normalizer/FlattenExceptionNormalizer.php
@@ -26,20 +26,20 @@ final class FlattenExceptionNormalizer implements DenormalizerInterface, Normali
 {
     use NormalizerAwareTrait;
 
-    public function normalize(mixed $object, ?string $format = null, array $context = []): array
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array
     {
         return [
-            'message' => $object->getMessage(),
-            'code' => $object->getCode(),
-            'headers' => $object->getHeaders(),
-            'class' => $object->getClass(),
-            'file' => $object->getFile(),
-            'line' => $object->getLine(),
-            'previous' => null === $object->getPrevious() ? null : $this->normalize($object->getPrevious(), $format, $context),
-            'status' => $object->getStatusCode(),
-            'status_text' => $object->getStatusText(),
-            'trace' => $object->getTrace(),
-            'trace_as_string' => $object->getTraceAsString(),
+            'message' => $data->getMessage(),
+            'code' => $data->getCode(),
+            'headers' => $data->getHeaders(),
+            'class' => $data->getClass(),
+            'file' => $data->getFile(),
+            'line' => $data->getLine(),
+            'previous' => null === $data->getPrevious() ? null : $this->normalize($data->getPrevious(), $format, $context),
+            'status' => $data->getStatusCode(),
+            'status_text' => $data->getStatusText(),
+            'trace' => $data->getTrace(),
+            'trace_as_string' => $data->getTraceAsString(),
         ];
     }
 
diff --git a/src/Symfony/Component/Serializer/Debug/TraceableNormalizer.php b/src/Symfony/Component/Serializer/Debug/TraceableNormalizer.php
index 1b143e295f5a7..d737f5b361bc8 100644
--- a/src/Symfony/Component/Serializer/Debug/TraceableNormalizer.php
+++ b/src/Symfony/Component/Serializer/Debug/TraceableNormalizer.php
@@ -40,14 +40,14 @@ public function getSupportedTypes(?string $format): array
         return $this->normalizer->getSupportedTypes($format);
     }
 
-    public function normalize(mixed $object, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
     {
         if (!$this->normalizer instanceof NormalizerInterface) {
             throw new \BadMethodCallException(\sprintf('The "%s()" method cannot be called as nested normalizer doesn\'t implements "%s".', __METHOD__, NormalizerInterface::class));
         }
 
         $startTime = microtime(true);
-        $normalized = $this->normalizer->normalize($object, $format, $context);
+        $normalized = $this->normalizer->normalize($data, $format, $context);
         $time = microtime(true) - $startTime;
 
         if ($traceId = ($context[TraceableSerializer::DEBUG_TRACE_ID] ?? null)) {
diff --git a/src/Symfony/Component/Serializer/Debug/TraceableSerializer.php b/src/Symfony/Component/Serializer/Debug/TraceableSerializer.php
index a05bf4bf8655c..bd4f505f8acf9 100644
--- a/src/Symfony/Component/Serializer/Debug/TraceableSerializer.php
+++ b/src/Symfony/Component/Serializer/Debug/TraceableSerializer.php
@@ -66,17 +66,17 @@ public function deserialize(mixed $data, string $type, string $format, array $co
         return $result;
     }
 
-    public function normalize(mixed $object, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
     {
         $context[self::DEBUG_TRACE_ID] = $traceId = bin2hex(random_bytes(4));
 
         $startTime = microtime(true);
-        $result = $this->serializer->normalize($object, $format, $context);
+        $result = $this->serializer->normalize($data, $format, $context);
         $time = microtime(true) - $startTime;
 
         $caller = $this->getCaller(__FUNCTION__, NormalizerInterface::class);
 
-        $this->dataCollector->collectNormalize($traceId, $object, $format, $context, $time, $caller, $this->serializerName);
+        $this->dataCollector->collectNormalize($traceId, $data, $format, $context, $time, $caller, $this->serializerName);
 
         return $result;
     }
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
index fb45a924bee70..32d1c906f9377 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
@@ -154,7 +154,7 @@ public function supportsNormalization(mixed $data, ?string $format = null, array
         return \is_object($data) && !$data instanceof \Traversable;
     }
 
-    public function normalize(mixed $object, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
     {
         $context['_read_attributes'] = true;
 
@@ -164,14 +164,14 @@ public function normalize(mixed $object, ?string $format = null, array $context
 
         $this->validateCallbackContext($context);
 
-        if ($this->isCircularReference($object, $context)) {
-            return $this->handleCircularReference($object, $format, $context);
+        if ($this->isCircularReference($data, $context)) {
+            return $this->handleCircularReference($data, $format, $context);
         }
 
-        $data = [];
+        $normalizedData = [];
         $stack = [];
-        $attributes = $this->getAttributes($object, $format, $context);
-        $class = ($this->objectClassResolver)($object);
+        $attributes = $this->getAttributes($data, $format, $context);
+        $class = ($this->objectClassResolver)($data);
         $classMetadata = $this->classMetadataFactory?->getMetadataFor($class);
         $attributesMetadata = $this->classMetadataFactory?->getMetadataFor($class)->getAttributesMetadata();
         if (isset($context[self::MAX_DEPTH_HANDLER])) {
@@ -189,12 +189,12 @@ public function normalize(mixed $object, ?string $format = null, array $context
                 continue;
             }
 
-            $attributeContext = $this->getAttributeNormalizationContext($object, $attribute, $context);
+            $attributeContext = $this->getAttributeNormalizationContext($data, $attribute, $context);
 
             try {
-                $attributeValue = $attribute === $this->classDiscriminatorResolver?->getMappingForMappedObject($object)?->getTypeProperty()
-                    ? $this->classDiscriminatorResolver?->getTypeForMappedObject($object)
-                    : $this->getAttributeValue($object, $attribute, $format, $attributeContext);
+                $attributeValue = $attribute === $this->classDiscriminatorResolver?->getMappingForMappedObject($data)?->getTypeProperty()
+                    ? $this->classDiscriminatorResolver?->getTypeForMappedObject($data)
+                    : $this->getAttributeValue($data, $attribute, $format, $attributeContext);
             } catch (UninitializedPropertyException|\Error $e) {
                 if (($context[self::SKIP_UNINITIALIZED_VALUES] ?? $this->defaultContext[self::SKIP_UNINITIALIZED_VALUES] ?? true) && $this->isUninitializedValueError($e)) {
                     continue;
@@ -203,17 +203,17 @@ public function normalize(mixed $object, ?string $format = null, array $context
             }
 
             if ($maxDepthReached) {
-                $attributeValue = $maxDepthHandler($attributeValue, $object, $attribute, $format, $attributeContext);
+                $attributeValue = $maxDepthHandler($attributeValue, $data, $attribute, $format, $attributeContext);
             }
 
-            $stack[$attribute] = $this->applyCallbacks($attributeValue, $object, $attribute, $format, $attributeContext);
+            $stack[$attribute] = $this->applyCallbacks($attributeValue, $data, $attribute, $format, $attributeContext);
         }
 
         foreach ($stack as $attribute => $attributeValue) {
-            $attributeContext = $this->getAttributeNormalizationContext($object, $attribute, $context);
+            $attributeContext = $this->getAttributeNormalizationContext($data, $attribute, $context);
 
             if (null === $attributeValue || \is_scalar($attributeValue)) {
-                $data = $this->updateData($data, $attribute, $attributeValue, $class, $format, $attributeContext, $attributesMetadata, $classMetadata);
+                $normalizedData = $this->updateData($normalizedData, $attribute, $attributeValue, $class, $format, $attributeContext, $attributesMetadata, $classMetadata);
                 continue;
             }
 
@@ -223,15 +223,15 @@ public function normalize(mixed $object, ?string $format = null, array $context
 
             $childContext = $this->createChildContext($attributeContext, $attribute, $format);
 
-            $data = $this->updateData($data, $attribute, $this->serializer->normalize($attributeValue, $format, $childContext), $class, $format, $attributeContext, $attributesMetadata, $classMetadata);
+            $normalizedData = $this->updateData($normalizedData, $attribute, $this->serializer->normalize($attributeValue, $format, $childContext), $class, $format, $attributeContext, $attributesMetadata, $classMetadata);
         }
 
         $preserveEmptyObjects = $context[self::PRESERVE_EMPTY_OBJECTS] ?? $this->defaultContext[self::PRESERVE_EMPTY_OBJECTS] ?? false;
-        if ($preserveEmptyObjects && !$data) {
+        if ($preserveEmptyObjects && !$normalizedData) {
             return new \ArrayObject();
         }
 
-        return $data;
+        return $normalizedData;
     }
 
     protected function instantiateObject(array &$data, string $class, array &$context, \ReflectionClass $reflectionClass, array|bool $allowedAttributes, ?string $format = null): object
diff --git a/src/Symfony/Component/Serializer/Normalizer/BackedEnumNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/BackedEnumNormalizer.php
index 3d8e7e7c549da..7d3659c8c1155 100644
--- a/src/Symfony/Component/Serializer/Normalizer/BackedEnumNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/BackedEnumNormalizer.php
@@ -33,13 +33,13 @@ public function getSupportedTypes(?string $format): array
         ];
     }
 
-    public function normalize(mixed $object, ?string $format = null, array $context = []): int|string
+    public function normalize(mixed $data, ?string $format = null, array $context = []): int|string
     {
-        if (!$object instanceof \BackedEnum) {
+        if (!$data instanceof \BackedEnum) {
             throw new InvalidArgumentException('The data must belong to a backed enumeration.');
         }
 
-        return $object->value;
+        return $data->value;
     }
 
     public function supportsNormalization(mixed $data, ?string $format = null, array $context = []): bool
diff --git a/src/Symfony/Component/Serializer/Normalizer/ConstraintViolationListNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/ConstraintViolationListNormalizer.php
index eda3b758e8792..92e036384dc66 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ConstraintViolationListNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ConstraintViolationListNormalizer.php
@@ -43,7 +43,7 @@ public function getSupportedTypes(?string $format): array
         ];
     }
 
-    public function normalize(mixed $object, ?string $format = null, array $context = []): array
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array
     {
         if (\array_key_exists(self::PAYLOAD_FIELDS, $context)) {
             $payloadFieldsToSerialize = $context[self::PAYLOAD_FIELDS];
@@ -59,7 +59,7 @@ public function normalize(mixed $object, ?string $format = null, array $context
 
         $violations = [];
         $messages = [];
-        foreach ($object as $violation) {
+        foreach ($data as $violation) {
             $propertyPath = $this->nameConverter ? $this->nameConverter->normalize($violation->getPropertyPath(), null, $format, $context) : $violation->getPropertyPath();
 
             $violationEntry = [
diff --git a/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
index d97108312f55c..444c413544f61 100644
--- a/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/CustomNormalizer.php
@@ -30,9 +30,9 @@ public function getSupportedTypes(?string $format): array
         ];
     }
 
-    public function normalize(mixed $object, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
     {
-        return $object->normalize($this->serializer, $format, $context);
+        return $data->normalize($this->serializer, $format, $context);
     }
 
     public function denormalize(mixed $data, string $type, ?string $format = null, array $context = []): mixed
diff --git a/src/Symfony/Component/Serializer/Normalizer/DataUriNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/DataUriNormalizer.php
index 5ee076be64edd..57ad724c488f1 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DataUriNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DataUriNormalizer.php
@@ -47,27 +47,27 @@ public function getSupportedTypes(?string $format): array
         return self::SUPPORTED_TYPES;
     }
 
-    public function normalize(mixed $object, ?string $format = null, array $context = []): string
+    public function normalize(mixed $data, ?string $format = null, array $context = []): string
     {
-        if (!$object instanceof \SplFileInfo) {
+        if (!$data instanceof \SplFileInfo) {
             throw new InvalidArgumentException('The object must be an instance of "\SplFileInfo".');
         }
 
-        $mimeType = $this->getMimeType($object);
-        $splFileObject = $this->extractSplFileObject($object);
+        $mimeType = $this->getMimeType($data);
+        $splFileObject = $this->extractSplFileObject($data);
 
-        $data = '';
+        $splFileData = '';
 
         $splFileObject->rewind();
         while (!$splFileObject->eof()) {
-            $data .= $splFileObject->fgets();
+            $splFileData .= $splFileObject->fgets();
         }
 
         if ('text' === explode('/', $mimeType, 2)[0]) {
-            return \sprintf('data:%s,%s', $mimeType, rawurlencode($data));
+            return \sprintf('data:%s,%s', $mimeType, rawurlencode($splFileData));
         }
 
-        return \sprintf('data:%s;base64,%s', $mimeType, base64_encode($data));
+        return \sprintf('data:%s;base64,%s', $mimeType, base64_encode($splFileData));
     }
 
     public function supportsNormalization(mixed $data, ?string $format = null, array $context = []): bool
diff --git a/src/Symfony/Component/Serializer/Normalizer/DateIntervalNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/DateIntervalNormalizer.php
index 05d1a8529e5f6..1ad81ec614c6c 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DateIntervalNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DateIntervalNormalizer.php
@@ -43,13 +43,13 @@ public function getSupportedTypes(?string $format): array
     /**
      * @throws InvalidArgumentException
      */
-    public function normalize(mixed $object, ?string $format = null, array $context = []): string
+    public function normalize(mixed $data, ?string $format = null, array $context = []): string
     {
-        if (!$object instanceof \DateInterval) {
+        if (!$data instanceof \DateInterval) {
             throw new InvalidArgumentException('The object must be an instance of "\DateInterval".');
         }
 
-        return $object->format($context[self::FORMAT_KEY] ?? $this->defaultContext[self::FORMAT_KEY]);
+        return $data->format($context[self::FORMAT_KEY] ?? $this->defaultContext[self::FORMAT_KEY]);
     }
 
     public function supportsNormalization(mixed $data, ?string $format = null, array $context = []): bool
diff --git a/src/Symfony/Component/Serializer/Normalizer/DateTimeNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/DateTimeNormalizer.php
index dfc498c19f194..a136ec227a3ae 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DateTimeNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DateTimeNormalizer.php
@@ -56,9 +56,9 @@ public function getSupportedTypes(?string $format): array
     /**
      * @throws InvalidArgumentException
      */
-    public function normalize(mixed $object, ?string $format = null, array $context = []): int|float|string
+    public function normalize(mixed $data, ?string $format = null, array $context = []): int|float|string
     {
-        if (!$object instanceof \DateTimeInterface) {
+        if (!$data instanceof \DateTimeInterface) {
             throw new InvalidArgumentException('The object must implement the "\DateTimeInterface".');
         }
 
@@ -66,14 +66,14 @@ public function normalize(mixed $object, ?string $format = null, array $context
         $timezone = $this->getTimezone($context);
 
         if (null !== $timezone) {
-            $object = clone $object;
-            $object = $object->setTimezone($timezone);
+            $data = clone $data;
+            $data = $data->setTimezone($timezone);
         }
 
         return match ($context[self::CAST_KEY] ?? $this->defaultContext[self::CAST_KEY] ?? false) {
-            'int' => (int) $object->format($dateTimeFormat),
-            'float' => (float) $object->format($dateTimeFormat),
-            default => $object->format($dateTimeFormat),
+            'int' => (int) $data->format($dateTimeFormat),
+            'float' => (float) $data->format($dateTimeFormat),
+            default => $data->format($dateTimeFormat),
         };
     }
 
diff --git a/src/Symfony/Component/Serializer/Normalizer/DateTimeZoneNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/DateTimeZoneNormalizer.php
index f4528a03dae40..cdb6eb2f0cb84 100644
--- a/src/Symfony/Component/Serializer/Normalizer/DateTimeZoneNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/DateTimeZoneNormalizer.php
@@ -31,13 +31,13 @@ public function getSupportedTypes(?string $format): array
     /**
      * @throws InvalidArgumentException
      */
-    public function normalize(mixed $object, ?string $format = null, array $context = []): string
+    public function normalize(mixed $data, ?string $format = null, array $context = []): string
     {
-        if (!$object instanceof \DateTimeZone) {
+        if (!$data instanceof \DateTimeZone) {
             throw new InvalidArgumentException('The object must be an instance of "\DateTimeZone".');
         }
 
-        return $object->getName();
+        return $data->getName();
     }
 
     public function supportsNormalization(mixed $data, ?string $format = null, array $context = []): bool
diff --git a/src/Symfony/Component/Serializer/Normalizer/FormErrorNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/FormErrorNormalizer.php
index 9ef13a669eba4..c91d7d528bcae 100644
--- a/src/Symfony/Component/Serializer/Normalizer/FormErrorNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/FormErrorNormalizer.php
@@ -22,20 +22,20 @@ final class FormErrorNormalizer implements NormalizerInterface
     public const TYPE = 'type';
     public const CODE = 'status_code';
 
-    public function normalize(mixed $object, ?string $format = null, array $context = []): array
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array
     {
-        $data = [
+        $error = [
             'title' => $context[self::TITLE] ?? 'Validation Failed',
             'type' => $context[self::TYPE] ?? 'https://symfony.com/errors/form',
             'code' => $context[self::CODE] ?? null,
-            'errors' => $this->convertFormErrorsToArray($object),
+            'errors' => $this->convertFormErrorsToArray($data),
         ];
 
-        if (0 !== \count($object->all())) {
-            $data['children'] = $this->convertFormChildrenToArray($object);
+        if (0 !== \count($data->all())) {
+            $error['children'] = $this->convertFormChildrenToArray($data);
         }
 
-        return $data;
+        return $error;
     }
 
     public function getSupportedTypes(?string $format): array
diff --git a/src/Symfony/Component/Serializer/Normalizer/JsonSerializableNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/JsonSerializableNormalizer.php
index 31c224175e697..3bc4f280eb495 100644
--- a/src/Symfony/Component/Serializer/Normalizer/JsonSerializableNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/JsonSerializableNormalizer.php
@@ -21,13 +21,13 @@
  */
 final class JsonSerializableNormalizer extends AbstractNormalizer
 {
-    public function normalize(mixed $object, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
     {
-        if ($this->isCircularReference($object, $context)) {
-            return $this->handleCircularReference($object, $format, $context);
+        if ($this->isCircularReference($data, $context)) {
+            return $this->handleCircularReference($data, $format, $context);
         }
 
-        if (!$object instanceof \JsonSerializable) {
+        if (!$data instanceof \JsonSerializable) {
             throw new InvalidArgumentException(\sprintf('The object must implement "%s".', \JsonSerializable::class));
         }
 
@@ -35,7 +35,7 @@ public function normalize(mixed $object, ?string $format = null, array $context
             throw new LogicException('Cannot normalize object because injected serializer is not a normalizer.');
         }
 
-        return $this->serializer->normalize($object->jsonSerialize(), $format, $context);
+        return $this->serializer->normalize($data->jsonSerialize(), $format, $context);
     }
 
     public function getSupportedTypes(?string $format): array
diff --git a/src/Symfony/Component/Serializer/Normalizer/MimeMessageNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/MimeMessageNormalizer.php
index 633edf36902f5..5b121338946fe 100644
--- a/src/Symfony/Component/Serializer/Normalizer/MimeMessageNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/MimeMessageNormalizer.php
@@ -62,25 +62,25 @@ public function setSerializer(SerializerInterface $serializer): void
         $this->normalizer->setSerializer($serializer);
     }
 
-    public function normalize(mixed $object, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
     {
-        if ($object instanceof Headers) {
+        if ($data instanceof Headers) {
             $ret = [];
-            foreach ($this->headersProperty->getValue($object) as $name => $header) {
+            foreach ($this->headersProperty->getValue($data) as $name => $header) {
                 $ret[$name] = $this->serializer->normalize($header, $format, $context);
             }
 
             return $ret;
         }
 
-        $ret = $this->normalizer->normalize($object, $format, $context);
+        $ret = $this->normalizer->normalize($data, $format, $context);
 
-        if ($object instanceof AbstractPart) {
-            $ret['class'] = $object::class;
+        if ($data instanceof AbstractPart) {
+            $ret['class'] = $data::class;
             unset($ret['seekable'], $ret['cid'], $ret['handle']);
         }
 
-        if ($object instanceof RawMessage && \array_key_exists('message', $ret) && null === $ret['message']) {
+        if ($data instanceof RawMessage && \array_key_exists('message', $ret) && null === $ret['message']) {
             unset($ret['message']);
         }
 
diff --git a/src/Symfony/Component/Serializer/Normalizer/ProblemNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/ProblemNormalizer.php
index 08aca6796cf88..8f255e6cee6d8 100644
--- a/src/Symfony/Component/Serializer/Normalizer/ProblemNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/ProblemNormalizer.php
@@ -57,7 +57,7 @@ public function normalize(mixed $object, ?string $format = null, array $context
             throw new InvalidArgumentException(\sprintf('The object must implement "%s".', FlattenException::class));
         }
 
-        $data = [];
+        $error = [];
         $context += $this->defaultContext;
         $debug = $this->debug && ($context['debug'] ?? true);
         $exception = $context['exception'] ?? null;
@@ -67,7 +67,7 @@ public function normalize(mixed $object, ?string $format = null, array $context
             if ($exception instanceof PartialDenormalizationException) {
                 $trans = $this->translator ? $this->translator->trans(...) : fn ($m, $p) => strtr($m, $p);
                 $template = 'This value should be of type {{ type }}.';
-                $data = [
+                $error = [
                     self::TYPE => 'https://symfony.com/errors/validation',
                     self::TITLE => 'Validation Failed',
                     'violations' => array_map(
@@ -84,27 +84,27 @@ public function normalize(mixed $object, ?string $format = null, array $context
                         $exception->getErrors()
                     ),
                 ];
-                $data['detail'] = implode("\n", array_map(fn ($e) => $e['propertyPath'].': '.$e['title'], $data['violations']));
+                $error['detail'] = implode("\n", array_map(fn ($e) => $e['propertyPath'].': '.$e['title'], $error['violations']));
             } elseif (($exception instanceof ValidationFailedException || $exception instanceof MessageValidationFailedException)
                 && $this->serializer instanceof NormalizerInterface
                 && $this->serializer->supportsNormalization($exception->getViolations(), $format, $context)
             ) {
-                $data = $this->serializer->normalize($exception->getViolations(), $format, $context);
+                $error = $this->serializer->normalize($exception->getViolations(), $format, $context);
             }
         }
 
-        $data = [
-            self::TYPE => $data[self::TYPE] ?? $context[self::TYPE] ?? 'https://tools.ietf.org/html/rfc2616#section-10',
-            self::TITLE => $data[self::TITLE] ?? $context[self::TITLE] ?? 'An error occurred',
+        $error = [
+            self::TYPE => $error[self::TYPE] ?? $context[self::TYPE] ?? 'https://tools.ietf.org/html/rfc2616#section-10',
+            self::TITLE => $error[self::TITLE] ?? $context[self::TITLE] ?? 'An error occurred',
             self::STATUS => $context[self::STATUS] ?? $object->getStatusCode(),
-            'detail' => $data['detail'] ?? ($debug ? $object->getMessage() : $object->getStatusText()),
-        ] + $data;
+            'detail' => $error['detail'] ?? ($debug ? $object->getMessage() : $object->getStatusText()),
+        ] + $error;
         if ($debug) {
-            $data['class'] = $object->getClass();
-            $data['trace'] = $object->getTrace();
+            $error['class'] = $object->getClass();
+            $error['trace'] = $object->getTrace();
         }
 
-        return $data;
+        return $error;
     }
 
     public function supportsNormalization(mixed $data, ?string $format = null, array $context = []): bool
diff --git a/src/Symfony/Component/Serializer/Normalizer/TranslatableNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/TranslatableNormalizer.php
index 463616e7248e4..d365598b548d2 100644
--- a/src/Symfony/Component/Serializer/Normalizer/TranslatableNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/TranslatableNormalizer.php
@@ -34,13 +34,13 @@ public function __construct(
     /**
      * @throws InvalidArgumentException
      */
-    public function normalize(mixed $object, ?string $format = null, array $context = []): string
+    public function normalize(mixed $data, ?string $format = null, array $context = []): string
     {
-        if (!$object instanceof TranslatableInterface) {
-            throw NotNormalizableValueException::createForUnexpectedDataType(\sprintf('The object must implement the "%s".', TranslatableInterface::class), $object, [TranslatableInterface::class]);
+        if (!$data instanceof TranslatableInterface) {
+            throw NotNormalizableValueException::createForUnexpectedDataType(\sprintf('The object must implement the "%s".', TranslatableInterface::class), $data, [TranslatableInterface::class]);
         }
 
-        return $object->trans($this->translator, $context[self::NORMALIZATION_LOCALE_KEY] ?? $this->defaultContext[self::NORMALIZATION_LOCALE_KEY]);
+        return $data->trans($this->translator, $context[self::NORMALIZATION_LOCALE_KEY] ?? $this->defaultContext[self::NORMALIZATION_LOCALE_KEY]);
     }
 
     public function supportsNormalization(mixed $data, ?string $format = null, array $context = []): bool
diff --git a/src/Symfony/Component/Serializer/Normalizer/UidNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/UidNormalizer.php
index 0bee1f704511e..eb624eed197bd 100644
--- a/src/Symfony/Component/Serializer/Normalizer/UidNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/UidNormalizer.php
@@ -48,16 +48,13 @@ public function getSupportedTypes(?string $format): array
         ];
     }
 
-    /**
-     * @param AbstractUid $object
-     */
-    public function normalize(mixed $object, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
     {
         return match ($context[self::NORMALIZATION_FORMAT_KEY] ?? $this->defaultContext[self::NORMALIZATION_FORMAT_KEY]) {
-            self::NORMALIZATION_FORMAT_CANONICAL => (string) $object,
-            self::NORMALIZATION_FORMAT_BASE58 => $object->toBase58(),
-            self::NORMALIZATION_FORMAT_BASE32 => $object->toBase32(),
-            self::NORMALIZATION_FORMAT_RFC4122 => $object->toRfc4122(),
+            self::NORMALIZATION_FORMAT_CANONICAL => (string) $data,
+            self::NORMALIZATION_FORMAT_BASE58 => $data->toBase58(),
+            self::NORMALIZATION_FORMAT_BASE32 => $data->toBase32(),
+            self::NORMALIZATION_FORMAT_RFC4122 => $data->toRfc4122(),
             default => throw new LogicException(\sprintf('The "%s" format is not valid.', $context[self::NORMALIZATION_FORMAT_KEY] ?? $this->defaultContext[self::NORMALIZATION_FORMAT_KEY])),
         };
     }
diff --git a/src/Symfony/Component/Serializer/Tests/Debug/TraceableSerializerTest.php b/src/Symfony/Component/Serializer/Tests/Debug/TraceableSerializerTest.php
index d697b270ff958..9092433214abf 100644
--- a/src/Symfony/Component/Serializer/Tests/Debug/TraceableSerializerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Debug/TraceableSerializerTest.php
@@ -142,7 +142,7 @@ public function deserialize(mixed $data, string $type, string $format, array $co
         return 'deserialized';
     }
 
-    public function normalize(mixed $object, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
     {
         return 'normalized';
     }
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/AbstractNormalizerDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/AbstractNormalizerDummy.php
index f5bf565a1b373..3945a10804cec 100644
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/AbstractNormalizerDummy.php
+++ b/src/Symfony/Component/Serializer/Tests/Fixtures/AbstractNormalizerDummy.php
@@ -30,7 +30,7 @@ public function getAllowedAttributes(string|object $classOrObject, array $contex
         return parent::getAllowedAttributes($classOrObject, $context, $attributesAsString);
     }
 
-    public function normalize(mixed $object, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
     {
     }
 
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/EnvelopeNormalizer.php b/src/Symfony/Component/Serializer/Tests/Fixtures/EnvelopeNormalizer.php
index 4acfdf8304743..7d085ad9afc28 100644
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/EnvelopeNormalizer.php
+++ b/src/Symfony/Component/Serializer/Tests/Fixtures/EnvelopeNormalizer.php
@@ -20,9 +20,9 @@ class EnvelopeNormalizer implements NormalizerInterface
 {
     private $serializer;
 
-    public function normalize($envelope, ?string $format = null, array $context = []): array
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array
     {
-        $xmlContent = $this->serializer->serialize($envelope->message, 'xml');
+        $xmlContent = $this->serializer->serialize($data->message, 'xml');
 
         $encodedContent = base64_encode($xmlContent);
 
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/EnvelopedMessageNormalizer.php b/src/Symfony/Component/Serializer/Tests/Fixtures/EnvelopedMessageNormalizer.php
index 812dbf015730a..e907b00a57d99 100644
--- a/src/Symfony/Component/Serializer/Tests/Fixtures/EnvelopedMessageNormalizer.php
+++ b/src/Symfony/Component/Serializer/Tests/Fixtures/EnvelopedMessageNormalizer.php
@@ -18,10 +18,10 @@
  */
 class EnvelopedMessageNormalizer implements NormalizerInterface
 {
-    public function normalize($message, ?string $format = null, array $context = []): array
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array
     {
         return [
-            'text' => $message->text,
+            'text' => $data->text,
         ];
     }
 
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
index d45586b4444ee..231448d4c0b50 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
@@ -85,11 +85,14 @@ class ObjectNormalizerTest extends TestCase
     use TypeEnforcementTestTrait;
 
     private ObjectNormalizer $normalizer;
+    private NormalizerInterface $normalizerInterface;
     private SerializerInterface&NormalizerInterface&MockObject $serializer;
 
     protected function setUp(): void
     {
         $this->createNormalizer();
+
+        $this->normalizerInterface = $this->normalizer;
     }
 
     private function createNormalizer(array $defaultContext = [], ?ClassMetadataFactoryInterface $classMetadataFactory = null): void
diff --git a/src/Symfony/Component/Serializer/Tests/Normalizer/TestNormalizer.php b/src/Symfony/Component/Serializer/Tests/Normalizer/TestNormalizer.php
index 941fef42b067a..6c6e930666eeb 100644
--- a/src/Symfony/Component/Serializer/Tests/Normalizer/TestNormalizer.php
+++ b/src/Symfony/Component/Serializer/Tests/Normalizer/TestNormalizer.php
@@ -20,7 +20,7 @@
  */
 class TestNormalizer implements NormalizerInterface
 {
-    public function normalize($object, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
+    public function normalize(mixed $data, ?string $format = null, array $context = []): array|string|int|float|bool|\ArrayObject|null
     {
         return null;
     }