agitator vs agitate

agitator is a noun but agitate is not a noun.

Word	Noun	Adjective	Verb	Adverb
agitator	Yes	No	No	No
agitate	No	No	Yes	No

agitator (noun)	agitate (noun)
one who agitates; a political troublemaker

agitator (verb)	agitate (verb)
	change the arrangement or position of
	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