nasofrontal vein vs vena

nasofrontal vein and vena both are nouns.

Word	Noun	Adjective	Verb	Adverb
nasofrontal vein	Yes	No	No	No
vena	Yes	No	No	No

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

nasofrontal vein: a vein located in the anterior medial part of the orbit; connects the superior ophthalmic with the angular vein
vena: a blood vessel that carries blood from the capillaries toward the heart

Other hypernyms of nasofrontal vein include vein, venous blood vessel.

nasofrontal vein (noun)	vena (noun)
a vein located in the anterior medial part of the orbit; connects the superior ophthalmic with the angular vein	a blood vessel that carries blood from the capillaries toward the heart