arteria coronaria vs arteria

arteria coronaria and arteria both are nouns.

Word	Noun	Adjective	Verb	Adverb
arteria coronaria	Yes	No	No	No
arteria	Yes	No	No	No

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

arteria coronaria: 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 arteria coronaria include arterial blood vessel, artery.

arteria coronaria (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