delegation vs authorization

delegation and authorization both are nouns.

Word	Noun	Adjective	Verb	Adverb
delegation	Yes	No	No	No
authorization	Yes	No	No	No

As nouns, authorization is a hypernym of delegation; that is, authorization is a word with a broader meaning than delegation:

Other hypernyms of delegation include authorisation, empowerment.

delegation (noun)	authorization (noun)
authorizing subordinates to make certain decisions	the act of conferring legality or sanction or formal warrant
a group of representatives or delegates	the power or right to give orders or make decisions
	official permission or approval
	a document giving an official instruction or command