class Hexapoda vs order Isoptera

class Hexapoda and order Isoptera both are nouns.

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

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