tibial vein vs vena tibialis

tibial vein and vena tibialis both are nouns.

Word	Noun	Adjective	Verb	Adverb
tibial vein	Yes	No	No	No
vena tibialis	Yes	No	No	No

As nouns, tibial vein and vena tibialis are synonyms defined as:

tibial vein and vena tibialis: veins of the lower leg; empty into the popliteal vein

tibial vein (noun)	vena tibialis (noun)
veins of the lower leg; empty into the popliteal vein	veins of the lower leg; empty into the popliteal vein