order Corrodentia vs class Hexapoda

order Corrodentia and class Hexapoda both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Corrodentia	Yes	No	No	No
class Hexapoda	Yes	No	No	No

order Corrodentia (noun)	class Hexapoda (noun)
an order of insects: includes booklice and bark-lice	insects; about five-sixths of all known animal species