family Trichiuridae vs order Percomorphi

family Trichiuridae and order Percomorphi both are nouns.

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

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