Apostraphes's Possessive Usage

I don’t have time to read this entire thread, so this may already have been discussed.

“The door hinge” and “the door’s hinge” aren’t necessarily the same. Without the apostrophe, you could be referring to a hinge that may or may not be attached to a door. You can have a box full of door hinges. But a “door’s hinge” refers to a hinge that is associated with a specific door. It may actually be on the door, or at least meant to be on that specific door.

I would never use the phrase “the doors hinge” (unless “hinge” is a verb, e.g. “the doors hinge on the left.”).

Here’s a link to a related thread I started some time ago: Which kind of genitive?

Yes, that previous thread is much clearer than this one.

Of course.

I can’t believe this is even an issue at all.

It’s also perfectly fine to use possessive relative pronouns for objects:

*What is the nation whose capital is Tunis?

He bought a car whose owner was dead. *