order Percomorphi vs family Polynemidae

order Percomorphi and family Polynemidae both are nouns.

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

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