class Insecta vs Isoptera

class Insecta and Isoptera both are nouns.

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

class Insecta (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