biodegrade vs rot

biodegrade is not a noun while rot is a noun.

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

As verbs, rot is a hypernym of biodegrade; that is, rot is a word with a broader meaning than biodegrade:

Other hypernyms of biodegrade include decompose, molder, moulder.

biodegrade (noun)	rot (noun)
	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

biodegrade (verb)	rot (verb)
break down naturally through the action of biological agents	become physically weaker
	break down