bloodbath vs butchery

bloodbath and butchery both are nouns.

Word	Noun	Adjective	Verb	Adverb
bloodbath	Yes	No	No	No
butchery	Yes	No	No	No

As nouns, butchery is a hypernym of bloodbath; that is, butchery is a word with a broader meaning than bloodbath:

Other hypernyms of bloodbath include carnage, mass murder, massacre, slaughter.

bloodbath (noun)	butchery (noun)
indiscriminate slaughter	the business of a butcher
	the savage and excessive killing of many people
	a building where animals are butchered