jejunal artery vs arteria

jejunal artery and arteria both are nouns.

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

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

jejunal artery: an artery that is a branch of the superior mesenteric artery that supplies the jejunum
arteria: a blood vessel that carries blood from the heart to the body

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

jejunal artery (noun)	arteria (noun)
an artery that is a branch of the superior mesenteric artery that supplies the jejunum	a blood vessel that carries blood from the heart to the body