instigant vs inciter

instigant and inciter both are nouns.

Word	Noun	Adjective	Verb	Adverb
instigant	Yes	No	No	No
inciter	Yes	No	No	No

As nouns, instigant and inciter are synonyms defined as:

Other synonyms of instigant include firebrand, instigator, provoker.

instigant (noun)	inciter (noun)
someone who deliberately foments trouble	someone who deliberately foments trouble