daunt vs instigate

daunt

verb
  • To discourage, intimidate. 

  • To overwhelm. 

instigate

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

  • to incite; to bring about by urging or encouraging 

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