outcaste vs doer

outcaste and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
outcaste	Yes	Yes	No	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of outcaste; that is, doer is a word with a broader meaning than outcaste:

Other hypernyms of outcaste include actor, worker.

outcaste (noun)	doer (noun)
a person belonging to no caste	a person who acts and gets things done

outcaste (adjective)	doer (adjective)
not belonging to or having been expelled from a caste and thus having no place or status in society