instigate vs whip up

instigate

verb
  • to incite; to bring about by urging or encouraging 

  • to goad or urge (a person) forward, especially to wicked actions; to provoke 

whip up

verb
  • To arouse or excite. 

  • To lift or snatch up suddenly. 

  • To produce (something) quickly, especially food. 

  • To beat (stir) (a liquid) quickly so to introduce air and form foam. 

How often have the words instigate and whip up occurred in a corpus of books? (source: Google Ngram Viewer )