radial artery vs arteria

radial artery and arteria both are nouns.

Word	Noun	Adjective	Verb	Adverb
radial artery	Yes	No	No	No
arteria	Yes	No	No	No

As nouns, arteria is a hypernym of radial artery; that is, arteria is a word with a broader meaning than radial artery:

radial artery: branch of the brachial artery beginning below the elbow and extending down the forearm around the wrist and into the palm
arteria: a blood vessel that carries blood from the heart to the body

Other hypernyms of radial artery include arterial blood vessel, artery.

radial artery (noun)	arteria (noun)
branch of the brachial artery beginning below the elbow and extending down the forearm around the wrist and into the palm	a blood vessel that carries blood from the heart to the body