deactivation vs shifting

deactivation

noun
  • The act of deactivating something, such as a bomb or alarm. 

shifting

noun
  • The phenomenon by which two or more constituents appearing on the same side of their common head exchange positions to obtain non-canonical order. 

  • A shift or change; a shifting movement. 

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