butchery vs slaughter

butchery and slaughter both are nouns.

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

As nouns, butchery and slaughter are synonyms defined as:

Other synonyms of butchery include carnage, mass murder, massacre.

butchery (noun)	slaughter (noun)
the business of a butcher	the killing of animals (as for food)
the savage and excessive killing of many people	the savage and excessive killing of many people
a building where animals are butchered	a sound defeat

butchery (verb)	slaughter (verb)
	kill a large number of people indiscriminately
	kill (animals) usually for food consumption