ignite vs stir up

ignite and stir up both are verbs.

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

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

Other synonyms of ignite include fire up, heat, inflame, wake.

ignite (verb)	stir up (verb)
start or maintain a fire in	provoke or stir up
arouse or excite feelings and passions	change the arrangement or position of
cause to start burning; subject to fire or great heat	arouse or excite feelings and passions
start to burn or burst into flames	try to stir up public opinion