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

A: It will end a traffic jam..

A: "Untie" is for when something has been tied in a knot, like "untie your shoelaces."

"Unwind" is for when something is not tied in a knot. Usually it has been wrapped around something in circles, like a spool (of thread) or itself (like how you might store a long cable or cord).

For example, if you had a video game controller and wrapped its cable around it to put it away, you could unwind the cable when you wanted to plug the controller in again.

A: "untie" is more specific because it refers only to things that can be tied, like shoelaces or a tie.

"undo" could be used about clothes that do or don't tie ("undo a button/knot") or in a more general sense ("undo a change")

A: it’s an exclamation of impatience or frustration. “Untie the rope already!” Implies it should have done before the statement. “Enough already!” Implies the speaker has grown impatient and wants something to stop.

A: Both are correct

A: no, this sounds perfect :)

A: I can’t untie my shoes! It’s too hard.