expulsion vs proscription

expulsion and proscription both are nouns.

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

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

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

Other hypernyms of expulsion include banishment.

expulsion (noun)	proscription (noun)
the act of expelling or projecting or ejecting	rejection by means of an act of banishing or proscribing someone
the act of forcing out someone or something	a decree that prohibits something
squeezing out by applying pressure