class Hexapoda vs Isoptera

class Hexapoda and Isoptera both are nouns.

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

class Hexapoda (noun)	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