thresh vs thrash about

thresh and thrash about both are verbs.

Word	Noun	Adjective	Verb	Adverb
thresh	No	No	Yes	No
thrash about	No	No	Yes	No

As verbs, thresh and thrash about are synonyms defined as:

Other synonyms of thresh include convulse, jactitate, slash, thrash, thresh about, toss.

thresh (verb)	thrash about (verb)
give a thrashing to; beat hard	move or stir about violently
beat the seeds out of a grain
move or stir about violently
move like a flail; thresh about