neurotic vs psychopath

neurotic and psychopath both are nouns.

Word	Noun	Adjective	Verb	Adverb
neurotic	Yes	Yes	No	No
psychopath	Yes	No	No	No

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

neurotic: a person suffering from neurosis
psychopath: someone with a sociopathic personality; a person with an antisocial personality disorder (`psychopath' was once widely used but has now been superseded by `sociopath')

Other hyponyms of neurotic include claustrophobe, hysteric, obsessive, obsessive-compulsive, sociopath.

neurotic (noun)	psychopath (noun)
a person suffering from neurosis	someone with a sociopathic personality; a person with an antisocial personality disorder (`psychopath' was once widely used but has now been superseded by `sociopath')

neurotic (adjective)	psychopath (adjective)
affected with emotional disorder
characteristic of or affected by neurosis