dacryocyst vs vesicle

dacryocyst and vesicle both are nouns.

Word	Noun	Adjective	Verb	Adverb
dacryocyst	Yes	No	No	No
vesicle	Yes	No	No	No

As nouns, vesicle is a hypernym of dacryocyst; that is, vesicle is a word with a broader meaning than dacryocyst:

dacryocyst: either of the two dilated ends of the lacrimal ducts at the nasal ends of the eyes that fill with tears secreted by the lacrimal glands
vesicle: a small anatomically normal sac or bladderlike structure (especially one containing fluid)

Other hypernyms of dacryocyst include cyst.

dacryocyst (noun)	vesicle (noun)
either of the two dilated ends of the lacrimal ducts at the nasal ends of the eyes that fill with tears secreted by the lacrimal glands	a small anatomically normal sac or bladderlike structure (especially one containing fluid)