devolvement vs delegation

devolvement and delegation both are nouns.

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

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

devolvement: the delegation of authority (especially from a central to a regional government)
delegation: authorizing subordinates to make certain decisions

Other hypernyms of devolvement include delegating, deputation, relegating, relegation.

devolvement (noun)	delegation (noun)
the delegation of authority (especially from a central to a regional government)	authorizing subordinates to make certain decisions
	a group of representatives or delegates