canaliculus vs epithelial duct

canaliculus and epithelial duct both are nouns.

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

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

canaliculus: a small canal or duct as in some bones and parts of plants
epithelial duct: a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance

Other hypernyms of canaliculus include canal, channel, duct.

canaliculus (noun)	epithelial duct (noun)
a small canal or duct as in some bones and parts of plants	a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance