heretic vs religious outcast

heretic and religious outcast both are nouns.

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

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

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

Other synonyms of heretic include misbeliever.

heretic (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
a person who holds unorthodox opinions in any field (not merely religion)