rotting vs rot

rotting and rot both are nouns.

Word	Noun	Adjective	Verb	Adverb
rotting	Yes	No	No	No
rot	Yes	No	Yes	No

As nouns, rotting and rot are synonyms defined as:

rotting and rot: (biology) the process of decay caused by bacterial or fungal action

Other synonyms of rotting include breakdown, decomposition, putrefaction.

rotting (noun)	rot (noun)
(biology) the process of decay caused by bacterial or fungal action	unacceptable behavior (especially ludicrously false statements)
	(biology) the process of decay caused by bacterial or fungal action
	a state of decay usually accompanied by an offensive odor

rotting (verb)	rot (verb)
	become physically weaker
	break down