murder vs butchery

murder and butchery both are nouns.

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

As nouns, butchery is a hyponym of murder; that is, butchery is a word with a more specific, narrower meaning than murder:

murder (noun)	butchery (noun)
unlawful premeditated killing of a human being by a human being	the business of a butcher
	the savage and excessive killing of many people
	a building where animals are butchered

murder (verb)	butchery (verb)
alter so as to make unrecognizable
kill intentionally and with premeditation