class Insecta vs order Coleoptera

class Insecta and order Coleoptera both are nouns.

Word	Noun	Adjective	Verb	Adverb
class Insecta	Yes	No	No	No
order Coleoptera	Yes	No	No	No

class Insecta (noun)	order Coleoptera (noun)
insects; about five-sixths of all known animal species	beetles