hardening of the arteries vs induration of the arteries

hardening of the arteries and induration of the arteries both are nouns.

Word	Noun	Adjective	Verb	Adverb
hardening of the arteries	Yes	No	No	No
induration of the arteries	Yes	No	No	No

As nouns, hardening of the arteries and induration of the arteries are synonyms defined as:

hardening of the arteries and induration of the arteries: sclerosis of the arterial walls

Other synonyms of hardening of the arteries include arterial sclerosis, arteriosclerosis, coronary-artery disease.

hardening of the arteries (noun)	induration of the arteries (noun)
sclerosis of the arterial walls	sclerosis of the arterial walls