Diptera vs order Diptera

Diptera and order Diptera both are nouns.

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

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

Diptera and order Diptera: a large order of insects having a single pair of wings and sucking or piercing mouths; includes true flies and mosquitoes and gnats and crane flies

Diptera (noun)	order Diptera (noun)
a large order of insects having a single pair of wings and sucking or piercing mouths; includes true flies and mosquitoes and gnats and crane flies	a large order of insects having a single pair of wings and sucking or piercing mouths; includes true flies and mosquitoes and gnats and crane flies