agitate vs roil

agitate and roil both are verbs.

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

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

Other hyponyms of agitate include beat, scramble, toss, rile, poke.

agitate (verb)	roil (verb)
change the arrangement or position of	make turbid by stirring up the sediments of
cause to be agitated, excited, or roused	be agitated
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