Questions about example sentences with, and the definition and usage of "Poc"

A: Person Of Color

A person whose skin color is either tan, brown, black, red, or yellow.

A: There are different meanings but the main, and most common phrase is, "People/Person of color". Hope this is what you are looking for!

A: I think it often depends on context. If there is a particular person, and it is reasonable for the listener to know who that person is and how to contact them (or it can be easily looked up, etc), then just giving a person's name is often fine. However, if the point of contact is not a particular person, but for example a group of people or a common phone number, mail alias, etc, then it may be more appropriate to give more detailed information about how to communicate with them instead.

Note that "POC" is a common acronym in some companies, etc, but not everywhere, so depending on the situation it is possible that people will not know what that means (and there are some places where "POC" is used to mean other things, so it could be misinterpreted). I think it is usually better to actually just spell it out as "point of contact". It is also more often said as "the point of contact for (something)", so I think it would be a bit more natural to say something like "What is the point of contact for your team?", or "What is the point of contact for questions related to this thing?", etc.