vena femoralis vs vena

vena femoralis and vena both are nouns.

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

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

vena femoralis: a vein that accompanies the femoral artery in the same sheath; a continuation of the popliteal vein; becomes the external iliac vein
vena: a blood vessel that carries blood from the capillaries toward the heart

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

vena femoralis (noun)	vena (noun)
a vein that accompanies the femoral artery in the same sheath; a continuation of the popliteal vein; becomes the external iliac vein	a blood vessel that carries blood from the capillaries toward the heart