killer vs kill

killer and kill both are nouns.

Word	Noun	Adjective	Verb	Adverb
killer	Yes	No	No	No
kill	Yes	No	Yes	No

killer (noun)	kill (noun)
predatory black-and-white toothed whale with large dorsal fin; common in cold seas	the act of terminating a life
a difficulty that is hard to deal with	the destruction of an enemy plane or ship or tank or missile
someone who causes the death of a person or animal	the body of an animal, or bodies of animals, killed by a person or another animal
the causal agent resulting in death

killer (verb)	kill (verb)
	mark for deletion, rub off, or erase
	destroy a vitally essential quality of or in
	cause to cease operating
	tire out completely
	end or extinguish by forceful means
	drink down entirely
	cause to die; put to death, usually intentionally or knowingly
	cause the death of, without intention
	deprive of life
	hit with great force
	hit with so much force as to make a return impossible, in racket games
	overwhelm with hilarity, pleasure, or admiration
	be the source of great pain for
	thwart the passage of
	be fatal