banishment vs rejection

banishment and rejection both are nouns.

Word	Noun	Adjective	Verb	Adverb
banishment	Yes	No	No	No
rejection	Yes	No	No	No

As nouns, rejection is a hypernym of banishment; that is, rejection is a word with a broader meaning than banishment:

banishment: rejection by means of an act of banishing or proscribing someone
rejection: the act of rejecting something

banishment (noun)	rejection (noun)
rejection by means of an act of banishing or proscribing someone	the act of rejecting something
the state of being banished or ostracized (excluded from society by general consent)	the speech act of rejecting
	(medicine) an immunological response that refuses to accept substances or organisms that are recognized as foreign
	the state of being rejected