rot vs biodegrade

rot is a noun but biodegrade is not a noun.

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

As verbs, biodegrade is a hyponym of rot; that is, biodegrade is a word with a more specific, narrower meaning than rot:

Other hyponyms of rot include hang.

rot (noun)	biodegrade (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

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