order Hymenoptera vs Hexapoda

order Hymenoptera and Hexapoda both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Hymenoptera	Yes	No	No	No
Hexapoda	Yes	No	No	No

order Hymenoptera (noun)	Hexapoda (noun)
an order of insects including: bees, wasps, ants, ichneumons, sawflies, gall wasps, etc.	insects; about five-sixths of all known animal species