bombycid vs moth

bombycid and moth both are nouns.

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

As nouns, moth is a hypernym of bombycid; that is, moth is a word with a broader meaning than bombycid:

bombycid: moderate-sized Asiatic moth whose larvae feed on mulberry leaves and produce silk
moth: typically crepuscular or nocturnal insect having a stout body and feathery or hairlike antennae

bombycid (noun)	moth (noun)
moderate-sized Asiatic moth whose larvae feed on mulberry leaves and produce silk	typically crepuscular or nocturnal insect having a stout body and feathery or hairlike antennae