sericterium vs secretor

sericterium and secretor both are nouns.

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

As nouns, secretor is a hypernym of sericterium; that is, secretor is a word with a broader meaning than sericterium:

sericterium: silk-producing gland of insects (especially of a silkworm) or spiders
secretor: any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream

Other hypernyms of sericterium include gland, secreter, secretory organ.

sericterium (noun)	secretor (noun)
silk-producing gland of insects (especially of a silkworm) or spiders	any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream