drub vs lick

drub is not a noun while lick is a noun.

Word	Noun	Adjective	Verb	Adverb
drub	No	No	Yes	No
lick	Yes	No	Yes	No

As verbs, drub and lick are synonyms defined as:

drub and lick: beat thoroughly and conclusively in a competition or fight

Other synonyms of drub include bat, clobber, cream, thrash.

drub (noun)	lick (noun)
	touching with the tongue
	(boxing) a blow with the fist
	a salt deposit that animals regularly lick

drub (verb)	lick (verb)
beat thoroughly and conclusively in a competition or fight	find the solution to (a problem or question) or understand the meaning of
	take up with the tongue
	pass the tongue over
	beat thoroughly and conclusively in a competition or fight