cutaneous vein vs vena

cutaneous vein and vena both are nouns.

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

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

cutaneous vein: one of a number of veins in the subcutaneous tissue that empty into deep veins
vena: a blood vessel that carries blood from the capillaries toward the heart

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

cutaneous vein (noun)	vena (noun)
one of a number of veins in the subcutaneous tissue that empty into deep veins	a blood vessel that carries blood from the capillaries toward the heart