drubbing vs beating

drubbing and beating both are nouns.

Word	Noun	Adjective	Verb	Adverb
drubbing	Yes	No	No	No
beating	Yes	No	No	No

As nouns, drubbing and beating are synonyms defined as:

drubbing and beating: the act of inflicting corporal punishment with repeated blows

Other synonyms of drubbing include lacing, licking, thrashing, trouncing, whacking.

drubbing (noun)	beating (noun)
the act of inflicting corporal punishment with repeated blows	the act of inflicting corporal punishment with repeated blows
a sound defeat	the act of overcoming or outdoing