saturniid moth vs saturniid

saturniid moth and saturniid both are nouns.

Word	Noun	Adjective	Verb	Adverb
saturniid moth	Yes	No	No	No
saturniid	Yes	No	No	No

As nouns, saturniid moth and saturniid are synonyms defined as:

saturniid moth and saturniid: large brightly colored and usually tropical moth; larvae spin silken cocoons

saturniid moth (noun)	saturniid (noun)
large brightly colored and usually tropical moth; larvae spin silken cocoons	large brightly colored and usually tropical moth; larvae spin silken cocoons