family Gerreidae vs order Percomorphi

family Gerreidae and order Percomorphi both are nouns.

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

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