go bad vs croak

go bad is not a noun while croak is a noun.

Word	Noun	Adjective	Verb	Adverb
go bad	No	No	Yes	No
croak	Yes	No	Yes	No

go bad (noun)	croak (noun)
	a harsh hoarse utterance (as of a frog)

go bad (verb)	croak (verb)
become unfit for consumption or use	pass from physical life and lose all bodily attributes and functions necessary to sustain life
stop operating or functioning	make complaining remarks or noises under one's breath
	utter a hoarse sound, like a raven