What Does It Mean To Say That Humans And Chimpanzees Have A Common Ancestor?

What Does It Mean To Say That Humans And Chimpanzees Have A Common Ancestor? We do share a common ape ancestor with chimpanzees. It lived between 8 and 6 million years ago. But humans and chimpanzees evolved differently from that same ancestor. All apes and monkeys share a more distant relative, which lived about 25