lacrimal duct vs lachrymal duct

lacrimal duct and lachrymal duct both are nouns.

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

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

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

Other synonyms of lacrimal duct include tear duct.

lacrimal 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