arteriola vs artery

arteriola and artery both are nouns.

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

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

Other hypernyms of arteriola include arteria, arterial blood vessel.

arteriola (noun)	artery (noun)
one of the small thin-walled arteries that end in capillaries	a major thoroughfare that bears important traffic
	a blood vessel that carries blood from the heart to the body