descending vs devolution

descending

noun
  • A descent. 

adj
  • Ordered such that each element is less than or equal to the previous element. 

  • Moving or sloping downwards. 

  • Becoming lower in pitch. 

  • Causing a sequence to follow a descending order. 

devolution

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

  • A rolling down. 

  • 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). 

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

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