order Lepidoptera vs Lepidoptera

order Lepidoptera and Lepidoptera both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Lepidoptera	Yes	No	No	No
Lepidoptera	Yes	No	No	No

As nouns, order Lepidoptera and Lepidoptera are synonyms defined as:

order Lepidoptera (noun)	Lepidoptera (noun)
moths and butterflies	moths and butterflies