slaughter vs killing

slaughter and killing both are nouns.

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

As nouns, killing is a hypernym of slaughter; that is, killing is a word with a broader meaning than slaughter:

Other hypernyms of slaughter include kill, putting to death.

slaughter (noun)	killing (noun)
the killing of animals (as for food)	the act of terminating a life
the savage and excessive killing of many people	an event that causes someone to die
a sound defeat	a very large profit

slaughter (adjective)	killing (adjective)
	very funny

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