vena cephalica accessoria vs forearm

vena cephalica accessoria and forearm both are nouns.

Word	Noun	Adjective	Verb	Adverb
vena cephalica accessoria	Yes	No	No	No
forearm	Yes	No	Yes	No

vena cephalica accessoria (noun)	forearm (noun)
a vein that passes along the radial edge of the forearm and joins the cephalic vein near the elbow	the part of the superior limb between the elbow and the wrist

vena cephalica accessoria (verb)	forearm (verb)
	arm in advance of a confrontation