silk gland vs gland

silk gland and gland both are nouns.

Word	Noun	Adjective	Verb	Adverb
silk gland	Yes	No	No	No
gland	Yes	No	No	No

As nouns, gland is a hypernym of silk gland; that is, gland is a word with a broader meaning than silk gland:

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

Other hypernyms of silk gland include secreter, secretor, secretory organ.

silk gland (noun)	gland (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