neurotic vs sufferer

neurotic and sufferer both are nouns.

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

As nouns, sufferer is a hypernym of neurotic; that is, sufferer is a word with a broader meaning than neurotic:

Other hypernyms of neurotic include diseased person, sick person.

neurotic (noun)	sufferer (noun)
a person suffering from neurosis	a person suffering from an illness
	one who suffers for the sake of principle

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