coronary artery disease vs atherosclerosis

coronary artery disease and atherosclerosis both are nouns.

Word	Noun	Adjective	Verb	Adverb
coronary artery disease	Yes	No	No	No
atherosclerosis	Yes	No	No	No

As nouns, coronary artery disease and atherosclerosis are synonyms defined as:

coronary artery disease and atherosclerosis: a stage of arteriosclerosis involving fatty deposits (atheromas) inside the arterial walls, thus narrowing the arteries

coronary artery disease (noun)	atherosclerosis (noun)
a stage of arteriosclerosis involving fatty deposits (atheromas) inside the arterial walls, thus narrowing the arteries	a stage of arteriosclerosis involving fatty deposits (atheromas) inside the arterial walls, thus narrowing the arteries