order Perciformes vs Acanthopterygii

order Perciformes and Acanthopterygii both are nouns.

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

order Perciformes (noun)	Acanthopterygii (noun)
one of the largest natural groups of fishes of both marine and fresh water: true perches, basses, tuna	teleost fishes having fins with sharp bony rays