innominate vein vs vena brachiocephalica

innominate vein and vena brachiocephalica both are nouns.

Word	Noun	Adjective	Verb	Adverb
innominate vein	Yes	No	No	No
vena brachiocephalica	Yes	No	No	No

As nouns, innominate vein and vena brachiocephalica are synonyms defined as:

innominate vein and vena brachiocephalica: veins formed by the union of the internal jugular and subclavian veins

Other synonyms of innominate vein include brachiocephalic vein.

innominate vein (noun)	vena brachiocephalica (noun)
veins formed by the union of the internal jugular and subclavian veins	veins formed by the union of the internal jugular and subclavian veins