agitate vs thrash about

agitate and thrash about both are verbs.

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

As verbs, thrash about is a hyponym of agitate; that is, thrash about is a word with a more specific, narrower meaning than agitate:

agitate (verb)	thrash about (verb)
change the arrangement or position of	move or stir about violently
cause to be agitated, excited, or roused
move very slightly
move or cause to move back and forth
try to stir up public opinion
exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for