Mantophasmatodea vs class Insecta

Mantophasmatodea and class Insecta both are nouns.

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

Mantophasmatodea (noun)	class Insecta (noun)
an order of insect identified in 2002 in a 45 million year old piece of amber from the Baltic region	insects; about five-sixths of all known animal species