fall on vs take responsibility

fall on

verb
  • To be assigned to; to acquire a new responsibility, duty or burden. 

  • To experience; to suffer; to fall upon. 

  • To occur on a particular day. 

  • Of the eyes or gaze: to alight upon. 

take responsibility

verb
  • To accept or take on an obligation or liability. 

  • To accept blame, punishment, or accountability for something within one's role or chain of command, especially when a leader protects the subordinates who caused the problem. 

  • To blame oneself for something; to acknowledge a fault. 

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