order Trichoptera vs class Insecta

order Trichoptera and class Insecta both are nouns.

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

order Trichoptera (noun)	class Insecta (noun)
an order of insects consisting of caddis flies	insects; about five-sixths of all known animal species