Why Do Some Objects,Such As Door's, And Window's,get bigger and smaller?

Answer 1

I've never seen a window or door get any bigger or smaller.

Answer 2

Well From my prospectivie I think That Because door's are bigger and window's are like a the same size as door's but just the door is just some feet taller then the window do you get it?

Answer 3

Um Never Mind Thank You Kaden