croak vs kill

croak and kill both are nouns.

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

croak (noun)	kill (noun)
a harsh hoarse utterance (as of a frog)	the act of terminating a life
	the destruction of an enemy plane or ship or tank or missile
	the body of an animal, or bodies of animals, killed by a person or another animal

croak (verb)	kill (verb)
pass from physical life and lose all bodily attributes and functions necessary to sustain life	mark for deletion, rub off, or erase
make complaining remarks or noises under one's breath	destroy a vitally essential quality of or in
utter a hoarse sound, like a raven	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