vena nasalis externa vs vena

vena nasalis externa and vena both are nouns.

Word	Noun	Adjective	Verb	Adverb
vena nasalis externa	Yes	No	No	No
vena	Yes	No	No	No

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

vena nasalis externa: one of the veins that drain the external nose and empty into the angular or facial vein
vena: a blood vessel that carries blood from the capillaries toward the heart

Other hypernyms of vena nasalis externa include vein, venous blood vessel.

vena nasalis externa (noun)	vena (noun)
one of the veins that drain the external nose and empty into the angular or facial vein	a blood vessel that carries blood from the capillaries toward the heart