bleeder vs sufferer

bleeder and sufferer both are nouns.

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

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

bleeder: someone who has hemophilia and is subject to uncontrollable bleeding
sufferer: a person suffering from an illness

Other hypernyms of bleeder include diseased person, sick person.

bleeder (noun)	sufferer (noun)
someone who has hemophilia and is subject to uncontrollable bleeding	a person suffering from an illness
	one who suffers for the sake of principle