vena ileocolica vs vena

vena ileocolica and vena both are nouns.

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

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

vena ileocolica: a vein that drains the end of the ileum and the appendix and the cecum and the lower part of the ascending colon
vena: a blood vessel that carries blood from the capillaries toward the heart

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

vena ileocolica (noun)	vena (noun)
a vein that drains the end of the ileum and the appendix and the cecum and the lower part of the ascending colon	a blood vessel that carries blood from the capillaries toward the heart