I hope these definitions help. I know they helped me during discussion 5 - human evolution!
n. a member of the biological superfamily Hominoidea, including all modern great apes and humans and a number of their extinct ancestors and relatives taken from http://www.thefreedictionary.com/hominoid
n.any of the modern or extinct bipedal primates of the family Hominidae, including all species of the genera Homo and Australopithecus. taken from http://www.thefreedictionary.com/hominid