class Insecta vs Psocoptera

class Insecta and Psocoptera both are nouns.

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

class Insecta (noun)	Psocoptera (noun)
insects; about five-sixths of all known animal species	an order of insects: includes booklice and bark-lice