basilar artery vs arteria

basilar artery and arteria both are nouns.

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

As nouns, arteria is a hypernym of basilar artery; that is, arteria 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
arteria: a blood vessel that carries blood from the heart to the body

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

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