devolution vs handover

devolution

noun
  • The transference of a right to a successor, or of a power from one body to another. 

  • A rolling down. 

  • A descent, especially one that passes through a series of revolutions, or by succession 

  • Degeneration (as opposed to evolution). 

  • The transfer of some powers and the delegation of some functions from a central government to local government (e.g. from the U.K. parliament to Scottish parliament and Welsh assembly). 

handover

noun
  • The transference of authority, control, power or knowledge from one agency to another, or from one state to another. 

  • the process of transferring an ongoing call or data session from one channel connected to the core network to another channel. 

  • The transfer of goods from the dealer to the purchaser, often of illegal goods. 

  • the process of transferring satellite control responsibility from one earth station to another without loss or interruption of service. 

  • The information passed on in such a case. 

How often have the words devolution and handover occurred in a corpus of books? (source: Google Ngram Viewer )