vena choroidea vs vena

vena choroidea and vena both are nouns.

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

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

vena choroidea: either of two veins serving the choroid coat of the eye
vena: a blood vessel that carries blood from the capillaries toward the heart

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

vena choroidea (noun)	vena (noun)
either of two veins serving the choroid coat of the eye	a blood vessel that carries blood from the capillaries toward the heart