vorticose vein vs vena

vorticose vein and vena both are nouns.

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

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

vorticose vein: a vein formed by branches from the back surface of the eye and the ciliary body; empties into the ophthalmic veins
vena: a blood vessel that carries blood from the capillaries toward the heart

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

vorticose vein (noun)	vena (noun)
a vein formed by branches from the back surface of the eye and the ciliary body; empties into the ophthalmic veins	a blood vessel that carries blood from the capillaries toward the heart