order Isoptera vs class Hexapoda

order Isoptera and class Hexapoda both are nouns.

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

order Isoptera (noun)	class Hexapoda (noun)
order of social insects that live in colonies, including: termites; often placed in subclass Exopterygota	insects; about five-sixths of all known animal species