Blennioidea vs order Perciformes

Blennioidea and order Perciformes both are nouns.

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

Blennioidea (noun)	order Perciformes (noun)
blennies, butterfishes, gunnels	one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna