drive off vs intensify

drive off

verb
  • Used other than figuratively or idiomatically: see drive, off. 

  • To force to leave or go away. 

intensify

verb
  • To render more intense 

  • To become intense, or more intense; to act with increasing power or energy. 

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