drivel vs rot

drivel and rot both are nouns.

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

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

drivel (noun)	rot (noun)
saliva spilling from the mouth	unacceptable behavior (especially ludicrously false statements)
a worthless message	(biology) the process of decay caused by bacterial or fungal action
	a state of decay usually accompanied by an offensive odor

drivel (verb)	rot (verb)
let saliva drivel from the mouth	become physically weaker
	break down