duct gland vs secretory organ

duct gland and secretory organ both are nouns.

Word	Noun	Adjective	Verb	Adverb
duct gland	Yes	No	No	No
secretory organ	Yes	No	No	No

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

duct gland: a gland that secretes externally through a duct
secretory organ: any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream

Other hypernyms of duct gland include gland, secreter, secretor.

duct gland (noun)	secretory organ (noun)
a gland that secretes externally through a duct	any of various organs that synthesize substances needed by the body and release it through ducts or directly into the bloodstream