haemophiliac vs sick person

haemophiliac and sick person both are nouns.

Word	Noun	Adjective	Verb	Adverb
haemophiliac	Yes	No	No	No
sick person	Yes	No	No	No

As nouns, sick person is a hypernym of haemophiliac; that is, sick person is a word with a broader meaning than haemophiliac:

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

Other hypernyms of haemophiliac include diseased person, sufferer.

haemophiliac (noun)	sick person (noun)
someone who has hemophilia and is subject to uncontrollable bleeding	a person suffering from an illness