sufferer vs unfortunate

sufferer and unfortunate both are nouns.

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

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

Other hypernyms of sufferer include unfortunate person.

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

sufferer (adjective)	unfortunate (adjective)
	not favored by fortune; marked or accompanied by or resulting in ill fortune
	not auspicious; boding ill
	unsuitable or regrettable