coronary artery vs arteria

coronary artery and arteria both are nouns.

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

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

coronary artery: the artery that branches from the aorta to supply blood to the heart
arteria: a blood vessel that carries blood from the heart to the body

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

coronary artery (noun)	arteria (noun)
the artery that branches from the aorta to supply blood to the heart	a blood vessel that carries blood from the heart to the body