vulture vs cathartid

vulture and cathartid both are nouns.

Word	Noun	Adjective	Verb	Adverb
vulture	Yes	No	No	No
cathartid	Yes	No	No	No

As nouns, cathartid is a hyponym of vulture; that is, cathartid is a word with a more specific, narrower meaning than vulture:

vulture: any of various large diurnal birds of prey having naked heads and weak claws and feeding chiefly on carrion
cathartid: large birds of prey superficially similar to Old World vultures

Other hyponyms of vulture include Aegypiidae, family Aegypiidae, Old World vulture, New World vulture.

vulture (noun)	cathartid (noun)
any of various large diurnal birds of prey having naked heads and weak claws and feeding chiefly on carrion	large birds of prey superficially similar to Old World vultures
someone who attacks in search of booty