vena cephalica vs cephalic vein

vena cephalica and cephalic vein both are nouns.

Word	Noun	Adjective	Verb	Adverb
vena cephalica	Yes	No	No	No
cephalic vein	Yes	No	No	No

As nouns, vena cephalica and cephalic vein are synonyms defined as:

vena cephalica and cephalic vein: a large vein of the arm that empties into the axillary vein

vena cephalica (noun)	cephalic vein (noun)
a large vein of the arm that empties into the axillary vein	a large vein of the arm that empties into the axillary vein