croaking vs croak

croaking and croak both are nouns.

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

As nouns, croaking and croak are synonyms defined as:

croaking (noun)	croak (noun)
a harsh hoarse utterance (as of a frog)	a harsh hoarse utterance (as of a frog)

croaking (verb)	croak (verb)
	pass from physical life and lose all bodily attributes and functions necessary to sustain life
	make complaining remarks or noises under one's breath
	utter a hoarse sound, like a raven