vena pylorica vs vena

vena pylorica and vena both are nouns.

Word	Noun	Adjective	Verb	Adverb
vena pylorica	Yes	No	No	No
vena	Yes	No	No	No

As nouns, vena is a hypernym of vena pylorica; that is, vena is a word with a broader meaning than vena pylorica:

vena pylorica: a tributary of the right gastric vein
vena: a blood vessel that carries blood from the capillaries toward the heart

Other hypernyms of vena pylorica include vein, venous blood vessel.

vena pylorica (noun)	vena (noun)
a tributary of the right gastric vein	a blood vessel that carries blood from the capillaries toward the heart