beating vs thrashing

beating and thrashing both are nouns.

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

As nouns, beating and thrashing are synonyms defined as:

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

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

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