relegation vs banishment

relegation and banishment both are nouns.

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

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

relegation: mild banishment; consignment to an inferior position
banishment: rejection by means of an act of banishing or proscribing someone

Other hypernyms of relegation include proscription.

relegation (noun)	banishment (noun)
authorizing subordinates to make certain decisions	rejection by means of an act of banishing or proscribing someone
mild banishment; consignment to an inferior position	the state of being banished or ostracized (excluded from society by general consent)
the act of assigning (someone or something) to a particular class or category