exclusion vs proscription

exclusion and proscription both are nouns.

Word	Noun	Adjective	Verb	Adverb
exclusion	Yes	No	No	No
proscription	Yes	No	No	No

As nouns, proscription is a hypernym of exclusion; that is, proscription is a word with a broader meaning than exclusion:

exclusion: the act of forcing out someone or something
proscription: rejection by means of an act of banishing or proscribing someone

Other hypernyms of exclusion include banishment.

exclusion (noun)	proscription (noun)
the act of forcing out someone or something	rejection by means of an act of banishing or proscribing someone
a deliberate act of omission	a decree that prohibits something
the state of being excluded
the state of being excommunicated