demagog vs rabble-rouser

demagog and rabble-rouser both are nouns.

Word	Noun	Adjective	Verb	Adverb
demagog	Yes	No	No	No
rabble-rouser	Yes	No	No	No

As nouns, demagog and rabble-rouser are synonyms defined as:

demagog and rabble-rouser: a political leader who seeks support by appealing to popular passions and prejudices

Other synonyms of demagog include demagogue.

demagog (noun)	rabble-rouser (noun)
a political leader who seeks support by appealing to popular passions and prejudices	a political leader who seeks support by appealing to popular passions and prejudices