vena tibialis vs tibial vein

vena tibialis and tibial vein both are nouns.

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

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

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

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