set on fire vs strike a chord

set on fire

verb
  • To arouse passionate feelings in. 

  • To cause to begin to burn. 

strike a chord

verb
  • To convey a feeling or meaning which someone personally internalizes and takes to heart. 

  • To elicit a significant reaction, especially one which is favorable or sympathetic. 

How often have the words set on fire and strike a chord occurred in a corpus of books? (source: Google Ngram Viewer )