roil vs disturb

roil and disturb both are verbs.

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

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

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

roil (verb)	disturb (verb)
make turbid by stirring up the sediments of	destroy the peace or tranquility of
be agitated	damage as if by shaking or jarring
	tamper with
	change the arrangement or position of
	move deeply