order Dictyoptera vs class Insecta

order Dictyoptera and class Insecta both are nouns.

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

order Dictyoptera (noun)	class Insecta (noun)
in some classifications replaced by the orders (here suborders) Blattodea (cockroaches) and Manteodea (mantids); in former classifications often subsumed under a much broader order Orthoptera	insects; about five-sixths of all known animal species