basilar artery vs artery

basilar artery and artery both are nouns.

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

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

basilar artery: an unpaired artery; supplies the pons and cerebellum and the back part of the cerebrum and the inner ear
artery: a blood vessel that carries blood from the heart to the body

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

basilar artery (noun)	artery (noun)
an unpaired artery; supplies the pons and cerebellum and the back part of the cerebrum and the inner ear	a major thoroughfare that bears important traffic
	a blood vessel that carries blood from the heart to the body