roil vs agitate

roil and agitate both are verbs.

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

As verbs, agitate is a hypernym of roil; that is, agitate is a word with a broader meaning than roil:

Other hypernyms of roil include commove, disturb, raise up, shake up, stir up, vex.

roil (verb)	agitate (verb)
make turbid by stirring up the sediments of	change the arrangement or position of
be agitated	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