coronary failure vs cardiopathy

coronary failure and cardiopathy both are nouns.

Word	Noun	Adjective	Verb	Adverb
coronary failure	Yes	No	No	No
cardiopathy	Yes	No	No	No

As nouns, cardiopathy is a hypernym of coronary failure; that is, cardiopathy is a word with a broader meaning than coronary failure:

coronary failure: inability of the heart to pump enough blood to sustain normal bodily functions
cardiopathy: a disease of the heart

Other hypernyms of coronary failure include failure, heart disease.

coronary failure (noun)	cardiopathy (noun)
inability of the heart to pump enough blood to sustain normal bodily functions	a disease of the heart