rot vs rotting

rot and rotting both are nouns.

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

As nouns, rot and rotting are synonyms defined as:

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

Other synonyms of rot include breakdown, decomposition, putrefaction.

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

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