king vulture vs cathartid

king vulture and cathartid both are nouns.

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

As nouns, cathartid is a hypernym of king vulture; that is, cathartid is a word with a broader meaning than king vulture:

king vulture: large black-and-white vulture of South America and Central America; have colorful wattles and wartlike protuberances on head and neck
cathartid: large birds of prey superficially similar to Old World vultures

Other hypernyms of king vulture include New World vulture.

king vulture (noun)	cathartid (noun)
large black-and-white vulture of South America and Central America; have colorful wattles and wartlike protuberances on head and neck	large birds of prey superficially similar to Old World vultures