capillary artery vs artery

capillary artery and artery both are nouns.

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

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

capillary artery: one of the small thin-walled arteries that end in capillaries
artery: a blood vessel that carries blood from the heart to the body

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

capillary artery (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