thrash about vs convulse

thrash about and convulse both are verbs.

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

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

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

thrash about (verb)	convulse (verb)
move or stir about violently	be overcome with laughter
	make someone convulse with laughter
	contract involuntarily, as in a spasm
	cause to contract
	move or stir about violently
	shake uncontrollably