hematemesis vs disgorgement

hematemesis and disgorgement both are nouns.

Word	Noun	Adjective	Verb	Adverb
hematemesis	Yes	No	No	No
disgorgement	Yes	No	No	No

As nouns, disgorgement is a hypernym of hematemesis; that is, disgorgement is a word with a broader meaning than hematemesis:

hematemesis: vomiting blood
disgorgement: the reflex act of ejecting the contents of the stomach through the mouth

Other hypernyms of hematemesis include emesis, puking, regurgitation, vomit, vomiting.

hematemesis (noun)	disgorgement (noun)
vomiting blood	the reflex act of ejecting the contents of the stomach through the mouth