a homonym is a word that is spelt and sounds exactly the same.here is an exampleFall - to fall downFall - another name for the season, autumnthey both look the same and sound the same, but they dont...
you can say "r" which is not really a homonym, or you can say "our" which isn't pronounced EXACTLY the same, but is very, very close. for some reason i think there's another one, but my brain won't...