order Phasmida vs class Hexapoda

order Phasmida and class Hexapoda both are nouns.

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

order Phasmida (noun)	class Hexapoda (noun)
in some classifications considered a suborder of Orthoptera: stick insects; leaf insects	insects; about five-sixths of all known animal species