Neuroptera vs class Hexapoda

Neuroptera and class Hexapoda both are nouns.

Word	Noun	Adjective	Verb	Adverb
Neuroptera	Yes	No	No	No
class Hexapoda	Yes	No	No	No

Neuroptera (noun)	class Hexapoda (noun)
an order of insects including: lacewings, antlions, dobsonflies, alderflies, fish flies, mantispids, spongeflies	insects; about five-sixths of all known animal species