bombycid vs Bombyx mori

bombycid and Bombyx mori both are nouns.

Word	Noun	Adjective	Verb	Adverb
bombycid	Yes	No	No	No
Bombyx mori	Yes	No	No	No

As nouns, Bombyx mori is a hyponym of bombycid; that is, Bombyx mori is a word with a more specific, narrower meaning than bombycid:

bombycid: moderate-sized Asiatic moth whose larvae feed on mulberry leaves and produce silk
Bombyx mori: stocky creamy-white Asiatic moth found almost entirely under human care; the source of most of the silk commerce

Other hyponyms of bombycid include domestic silkworm moth, domesticated silkworm moth.

bombycid (noun)	Bombyx mori (noun)
moderate-sized Asiatic moth whose larvae feed on mulberry leaves and produce silk	stocky creamy-white Asiatic moth found almost entirely under human care; the source of most of the silk commerce