key up vs waken

key up

verb
  • To raise the intensity, excitement, tension, etc., of. 

  • To produce nervous tension in. 

  • To raise the pitch of. 

  • To raise (the whole ring of an arch) off its centering, by driving in the keystone forcibly. 

waken

verb
  • To wake or rouse from sleep. 

  • To awaken; to cease to sleep; to be awakened; to stir. 

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