croak vs go bad

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

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

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

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