family Stromateidae vs order Percomorphi

family Stromateidae and order Percomorphi both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Stromateidae	Yes	No	No	No
order Percomorphi	Yes	No	No	No

family Stromateidae (noun)	order Percomorphi (noun)
butterfishes: harvest fishes; dollar fishes	one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna