wen vs Meibomian cyst

wen and Meibomian cyst both are nouns.

Word	Noun	Adjective	Verb	Adverb
wen	Yes	No	No	No
Meibomian cyst	Yes	No	No	No

As nouns, Meibomian cyst is a hyponym of wen; that is, Meibomian cyst is a word with a more specific, narrower meaning than wen:

wen: a common cyst of the skin; filled with fatty matter (sebum) that is secreted by a sebaceous gland that has been blocked
Meibomian cyst: a small sebaceous cyst of the eyelid resulting when a Meibomian gland is blocked

Other hyponyms of wen include chalazion.

wen (noun)	Meibomian cyst (noun)
a common cyst of the skin; filled with fatty matter (sebum) that is secreted by a sebaceous gland that has been blocked	a small sebaceous cyst of the eyelid resulting when a Meibomian gland is blocked