bronchial vein vs vena bronchialis

bronchial vein and vena bronchialis both are nouns.

Word	Noun	Adjective	Verb	Adverb
bronchial vein	Yes	No	No	No
vena bronchialis	Yes	No	No	No

As nouns, bronchial vein and vena bronchialis are synonyms defined as:

bronchial vein and vena bronchialis: veins serving the bronchi; empty into the azygos vein

bronchial vein (noun)	vena bronchialis (noun)
veins serving the bronchi; empty into the azygos vein	veins serving the bronchi; empty into the azygos vein