stir up vs instigate

stir up and instigate both are verbs.

Word	Noun	Adjective	Verb	Adverb
stir up	No	No	Yes	No
instigate	No	No	Yes	No

As verbs, stir up and instigate are synonyms defined as:

Other synonyms of stir up include incite, set off.

stir up (verb)	instigate (verb)
provoke or stir up	provoke or stir up
change the arrangement or position of	serve as the inciting cause of
arouse or excite feelings and passions
try to stir up public opinion