butcher vs slaughter

butcher and slaughter both are nouns.

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

As verbs, butcher and slaughter are synonyms defined as:

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

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