vena axillaris vs axillary vein

vena axillaris and axillary vein both are nouns.

Word	Noun	Adjective	Verb	Adverb
vena axillaris	Yes	No	No	No
axillary vein	Yes	No	No	No

As nouns, vena axillaris and axillary vein are synonyms defined as:

vena axillaris and axillary vein: a continuation of the basilic vein and brachial vein that becomes the subclavian vein

vena axillaris (noun)	axillary vein (noun)
a continuation of the basilic vein and brachial vein that becomes the subclavian vein	a continuation of the basilic vein and brachial vein that becomes the subclavian vein