outcast vs heretic

outcast and heretic both are nouns.

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

As nouns, heretic is a hyponym of outcast; that is, heretic is a word with a more specific, narrower meaning than outcast:

outcast: a person who is rejected (from society or home)
heretic: a person who holds religious beliefs in conflict with the dogma of the Roman Catholic Church

Other hyponyms of outcast include misbeliever, religious outcast, leper, Harijan, untouchable.

outcast (noun)	heretic (noun)
a person who is rejected (from society or home)	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)

outcast (adjective)	heretic (adjective)
excluded from a society