capillary vein vs venula

capillary vein and venula both are nouns.

Word	Noun	Adjective	Verb	Adverb
capillary vein	Yes	No	No	No
venula	Yes	No	No	No

As nouns, capillary vein and venula are synonyms defined as:

Other synonyms of capillary vein include venule.

capillary vein (noun)	venula (noun)
a minute vein continuous with a capillary	a minute vein continuous with a capillary