canaliculus vs duct

canaliculus and duct both are nouns.

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

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

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

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

canaliculus (noun)	duct (noun)
a small canal or duct as in some bones and parts of plants	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