lactiferous duct vs duct

lactiferous duct and duct both are nouns.

Word	Noun	Adjective	Verb	Adverb
lactiferous duct	Yes	No	No	No
duct	Yes	No	No	No

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

lactiferous duct: ducts of the mammary gland that carry milk to the nipple
duct: a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance

Other hypernyms of lactiferous duct include canal, channel, epithelial duct.

lactiferous duct (noun)	duct (noun)
ducts of the mammary gland that carry milk to the nipple	an enclosed conduit for a fluid
	a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
	a continuous tube formed by a row of elongated cells lacking intervening end walls