order Percomorphi vs Priacanthidae

order Percomorphi and Priacanthidae both are nouns.

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

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