femoral vein vs vena femoralis

femoral vein and vena femoralis both are nouns.

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

As nouns, femoral vein and vena femoralis are synonyms defined as:

femoral vein and vena femoralis: a vein that accompanies the femoral artery in the same sheath; a continuation of the popliteal vein; becomes the external iliac vein

femoral vein (noun)	vena femoralis (noun)
a vein that accompanies the femoral artery in the same sheath; a continuation of the popliteal vein; becomes the external iliac vein	a vein that accompanies the femoral artery in the same sheath; a continuation of the popliteal vein; becomes the external iliac vein