these revisions have led to a varied use of the word "hominid" over time. The original meaning of the term referred to only humans and their closest relatives--what is now the modern meaning of the term "hominin". The meaning of the taxon Hominidae changed gradually, leading to a modern usage of "hominid" that includes all the great apes including humans.

A number of very similar words apply to related classifications:
* A hominoid,