The hominids are members of the biological family Hominidae (the great apes). This family includes humans, chimpanzees, gorillas and orangutans. "Great ape" is a common name rather than a taxonomic label, and people use it in different ways. Sometimes people mean to include humans in the category of “great apes,” and sometimes they mean non-human apes. Homo sapiens is definitely a hominid, as judged by all modern reference works.
Hominids range in weight from 48 kg to 270 kg. Males are larger than females. Hominids are primates with no tails, strong bodies, and well-developed forearms. Their thumbs (and big toes, except in humans) oppose the fingers, and form a grip. All digits have flattened nails.