venae episclerales vs venula

venae episclerales and venula both are nouns.

Word	Noun	Adjective	Verb	Adverb
venae episclerales	Yes	No	No	No
venula	Yes	No	No	No

As nouns, venula is a hypernym of venae episclerales; that is, venula is a word with a broader meaning than venae episclerales:

venae episclerales: small veins in the sclera near the corneal margin; empty into the anterior ciliary veins
venula: a minute vein continuous with a capillary

Other hypernyms of venae episclerales include capillary vein, venule.

venae episclerales (noun)	venula (noun)
small veins in the sclera near the corneal margin; empty into the anterior ciliary veins	a minute vein continuous with a capillary