psychoneurotic vs sufferer

psychoneurotic and sufferer both are nouns.

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

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

Other hypernyms of psychoneurotic include diseased person, sick person.

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

psychoneurotic (adjective)	sufferer (adjective)
affected with emotional disorder