order Percomorphi vs family Gerreidae

order Percomorphi and family Gerreidae both are nouns.

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

order Percomorphi (noun)	family Gerreidae (noun)
one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna	mojarras