get after vs take to task

get after

verb
  • To attempt to convince another to move into action. 

  • To move into action in pursuit of something. 

  • To move into action in attempt to catch or defeat another. 

take to task

verb
  • To lecture, berate, admonish, or hold somebody accountable for his or her actions. 

How often have the words get after and take to task occurred in a corpus of books? (source: Google Ngram Viewer )