order Perciformes vs family Ephippidae

order Perciformes and family Ephippidae both are nouns.

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

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