I dropped a plastic cup as I was taking it out of the cupboard. even though it wasn't broken apart, it was bumped on the edge of it. と I dropped a plastic cup as I was taking it out of the cupboard. even though it wasn't broken apart, it was dented on the edge of it. はどう違いますか？説明が難しい場合は、例文を教えて下さい。

Bumped is the action, dented is the result. To bump something is to lightly hit it, but it does not necessarily mean there was damage. To dent something means that it got a dent in it. I would say “I dropped a plastic cup as I was taking it out of the cupboard. Even though it didn’t break, it had a dent on the edge” or “even though it didn’t break, the edge of it was dented”