devolution vs relegating

devolution and relegating both are nouns.

Word	Noun	Adjective	Verb	Adverb
devolution	Yes	No	No	No
relegating	Yes	No	No	No

As nouns, relegating is a hypernym of devolution; that is, relegating is a word with a broader meaning than devolution:

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

Other hypernyms of devolution include delegating, delegation, deputation, relegation.

devolution (noun)	relegating (noun)
the delegation of authority (especially from a central to a regional government)	authorizing subordinates to make certain decisions
the process of declining from a higher to a lower level of effective power or vitality or essential quality