Perciformes vs Blennioidea

Perciformes and Blennioidea both are nouns.

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

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