tear duct vs lachrymal duct

tear duct and lachrymal duct both are nouns.

Word	Noun	Adjective	Verb	Adverb
tear duct	Yes	No	No	No
lachrymal duct	Yes	No	No	No

As nouns, tear duct and lachrymal duct are synonyms defined as:

tear duct and lachrymal duct: any of several small ducts that carry tears from the lacrimal glands

Other synonyms of tear duct include lacrimal duct.

tear duct (noun)	lachrymal duct (noun)
any of several small ducts that carry tears from the lacrimal glands	any of several small ducts that carry tears from the lacrimal glands