family Polynemidae vs order Perciformes

family Polynemidae and order Perciformes both are nouns.

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

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