preclude vs turn on

preclude

verb
  • Remove the possibility of; rule out; prevent or exclude; to make impossible. 

turn on

verb
  • 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 violently rebel against; to suddenly attack. 

  • To sexually arouse. 

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