Aside from the fact that it really means part of something else, we've got to remember that it is one of those 'i before e except after c' things.

I have a piece of the puzzle.  Well, maybe not.  You know what it's like when you're assembling a 1,000 piece jigsaw puzzle.  Yes, you get to the end and one piece is missing.

You're so angry you want to give someone a piece of your mind.

Just remember not to give too many people pieces or you will become mindless.

We might be listening to a musical piece, which can be a movement, I think, in a symphony

Or we might piece together the parts of a child's toy, especially on that night before Christmas when everything can and will go wrong.  I've been there and done that far too many times.

I've been known to move a chess piece incorrectly, no, come think of it, I'm always doing that

Some people call a gun a piece.

This is not to be confused with the word peace, which means something else, and hopefully, everyone will put away their pieces (guns) and declare peace.

And, every Sunday, at the church, there's always an opportunity to say to the people around you 'peace be with you'.

I wonder if that works very well if the person standing next to you is your enemy?