The hominids are members of the biological family Hominidae (the great apes). This includes humans, chimpanzees, gorillas and orangutans. "Great ape" is a common name rather than a taxonomic label and there are differences in usage. Sometimes it seems to exclude humans ("humans and the great apes"); at other times it includes them ("humans and non-human great apes"). "Homo sapiens" is definitely a hominid, as judged by all modern reference works.