protester vs dissident

protester and dissident both are nouns.

Word	Noun	Adjective	Verb	Adverb
protester	Yes	No	No	No
dissident	Yes	Yes	No	No

As nouns, protester and dissident are synonyms defined as:

protester and dissident: a person who dissents from some established policy

Other synonyms of protester include contestant, dissenter, objector.

protester (noun)	dissident (noun)
someone who participates in a public display of group feeling	a person who dissents from some established policy
a person who dissents from some established policy

protester (adjective)	dissident (adjective)
	disagreeing, especially with a majority
	characterized by departure from accepted beliefs or standards