evoke vs spark off

evoke

verb
  • To elicit a response. 

  • To call out; to draw out or bring forth. 

  • To cause the manifestation of something (emotion, picture, etc.) in someone's mind or imagination. 

spark off

verb
  • To initiate something by providing the necessary conditions. 

How often have the words evoke and spark off occurred in a corpus of books? (source: Google Ngram Viewer )