Priacanthidae vs order Perciformes

Priacanthidae and order Perciformes both are nouns.

Word	Noun	Adjective	Verb	Adverb
Priacanthidae	Yes	No	No	No
order Perciformes	Yes	No	No	No

Priacanthidae (noun)	order Perciformes (noun)
small carnivorous percoid fishes found worldwide in tropical seas	one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna