cerebellar artery vs artery

cerebellar artery and artery both are nouns.

Word	Noun	Adjective	Verb	Adverb
cerebellar artery	Yes	No	No	No
artery	Yes	No	No	No

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

Other hypernyms of cerebellar artery include arteria, arterial blood vessel.

cerebellar artery (noun)	artery (noun)
an artery that supplies the cerebellum	a major thoroughfare that bears important traffic
	a blood vessel that carries blood from the heart to the body