hex vs turn on

hex

verb
  • To cast a spell on (specifically an evil spell), to bewitch. 

noun
  • A spell (now rare but still found in compounds such as hex sign and hexcraft). 

  • A hexagonal space on a game board. 

  • An evil spell or curse. 

  • A witch. 

  • a hexagon-shaped item of rock climbing equipment intended to be wedged into a crack or other opening in the rock. 

turn on

verb
  • To violently rebel against; to suddenly attack. 

  • To aim at. 

  • To depend upon; to pivot around, to have as a central subject. 

  • To power up, to put into operation, to start, to activate (an appliance, light, mechanism, functionality etc.). 

  • To fill with enthusiasm; to intoxicate, give pleasure to ( + to an object of interest or excitement). 

  • To start operating; to power up, to become on. 

  • To take drugs. 

  • To cause to take up drugs, especially hallucinogens. 

  • To set a flow of fluid or gas running by rotating a tap or valve. 

  • To sexually arouse. 

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