egg on vs take heart

egg on

verb
  • To encourage or coax a person to do something, especially something foolhardy or reckless. 

take heart

verb
  • To be courageous; to regain one's courage. 

intj
  • Used when encouraging someone to bear or take up a difficult situation. 

How often have the words egg on and take heart occurred in a corpus of books? (source: Google Ngram Viewer )