bombycid vs silkworm moth

bombycid and silkworm moth both are nouns.

Word	Noun	Adjective	Verb	Adverb
bombycid	Yes	No	No	No
silkworm moth	Yes	No	No	No

As nouns, bombycid and silkworm moth are synonyms defined as:

bombycid and silkworm moth: moderate-sized Asiatic moth whose larvae feed on mulberry leaves and produce silk

Other synonyms of bombycid include bombycid moth.

bombycid (noun)	silkworm moth (noun)
moderate-sized Asiatic moth whose larvae feed on mulberry leaves and produce silk	moderate-sized Asiatic moth whose larvae feed on mulberry leaves and produce silk
	any silkworm moth of the family Saturniidae