silkworm vs sericterium

silkworm and sericterium both are nouns.

Word	Noun	Adjective	Verb	Adverb
silkworm	Yes	No	No	No
sericterium	Yes	No	No	No

silkworm (noun)	sericterium (noun)
the commercially bred hairless white caterpillar of the domestic silkworm moth which spins a cocoon that can be processed to yield silk fiber; the principal source of commercial silk	silk-producing gland of insects (especially of a silkworm) or spiders
larva of a saturniid moth; spins a large amount of strong silk in constructing its cocoon