butcher vs murderer

butcher and murderer both are nouns.

Word	Noun	Adjective	Verb	Adverb
butcher	Yes	No	Yes	No
murderer	Yes	No	No	No

As nouns, murderer is a hypernym of butcher; that is, murderer is a word with a broader meaning than butcher:

butcher: a brutal indiscriminate murderer
murderer: a criminal who commits homicide (who performs the unlawful premeditated killing of another human being)

Other hypernyms of butcher include liquidator, manslayer.

butcher (noun)	murderer (noun)
a person who slaughters or dresses meat for market	a criminal who commits homicide (who performs the unlawful premeditated killing of another human being)
a brutal indiscriminate murderer
a retailer of meat
someone who makes mistakes because of incompetence

butcher (verb)	murderer (verb)
kill (animals) usually for food consumption