haematemesis vs disgorgement

haematemesis and disgorgement both are nouns.

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

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

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

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

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