misbeliever vs religious outcast

misbeliever and religious outcast both are nouns.

Word	Noun	Adjective	Verb	Adverb
misbeliever	Yes	No	No	No
religious outcast	Yes	No	No	No

As nouns, misbeliever and religious outcast are synonyms defined as:

misbeliever and religious outcast: a person who holds religious beliefs in conflict with the dogma of the Roman Catholic Church

Other synonyms of misbeliever include heretic.

misbeliever (noun)	religious outcast (noun)
a person who holds religious beliefs in conflict with the dogma of the Roman Catholic Church	a person who holds religious beliefs in conflict with the dogma of the Roman Catholic Church