electrify vs light a fire under

electrify

verb
  • To strongly excite, especially by something delightful or inspiring; to thrill. 

  • To supply electricity to; to charge with electricity. 

  • To cause electricity to pass through; to affect by electricity; to give an electric shock to. 

  • To adapt (a home, farm, village, city, industry, railroad) for electric power. 

  • To make electric. 

light a fire under

verb
  • To motivate or encourage (someone) to start sooner or move faster. 

How often have the words electrify and light a fire under occurred in a corpus of books? (source: Google Ngram Viewer )