hepatic duct vs epithelial duct

hepatic duct and epithelial duct both are nouns.

Word	Noun	Adjective	Verb	Adverb
hepatic duct	Yes	No	No	No
epithelial duct	Yes	No	No	No

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

hepatic duct: the duct that drains bile from the liver
epithelial duct: a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance

Other hypernyms of hepatic duct include canal, channel, duct.

hepatic duct (noun)	epithelial duct (noun)
the duct that drains bile from the liver	a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance