roust vs switch on

roust

verb
  • to arrest 

  • To harass, to treat in a rough way. 

  • to rout out of bed; to rouse 

  • to drive strongly 

noun
  • A strong tide or current, especially in a narrow channel. 

switch on

verb
  • to change one's expression or appearance as if by turning a switch 

  • to turn a switch to the "on" position in order to start or enable a device 

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