slaughter vs butcher

slaughter and butcher both are nouns.

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

As verbs, slaughter and butcher are synonyms defined as:

slaughter (noun)	butcher (noun)
the killing of animals (as for food)	a person who slaughters or dresses meat for market
the savage and excessive killing of many people	a brutal indiscriminate murderer
a sound defeat	a retailer of meat
	someone who makes mistakes because of incompetence

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