capillary artery vs arteriole

capillary artery and arteriole both are nouns.

Word	Noun	Adjective	Verb	Adverb
capillary artery	Yes	No	No	No
arteriole	Yes	No	No	No

As nouns, capillary artery and arteriole are synonyms defined as:

capillary artery and arteriole: one of the small thin-walled arteries that end in capillaries

Other synonyms of capillary artery include arteriola.

capillary artery (noun)	arteriole (noun)
one of the small thin-walled arteries that end in capillaries	one of the small thin-walled arteries that end in capillaries