psychopathy vs insanity

psychopathy and insanity both are nouns.

Word	Noun	Adjective	Verb	Adverb
psychopathy	Yes	No	No	No
insanity	Yes	No	No	No

As nouns, insanity is a hyponym of psychopathy; that is, insanity is a word with a more specific, narrower meaning than psychopathy:

psychopathy: any disease of the mind; the psychological state of someone who has emotional or behavioral problems serious enough to require psychiatric intervention
insanity: relatively permanent disorder of the mind

Other hyponyms of psychopathy include megalomania, psychosis.

psychopathy (noun)	insanity (noun)
any disease of the mind; the psychological state of someone who has emotional or behavioral problems serious enough to require psychiatric intervention	relatively permanent disorder of the mind