agitate vs chasten

agitate

verb
  • To disturb or excite; to perturb or stir up (a person). 

  • To cause to move with a violent, irregular action; to shake. 

chasten

verb
  • To render humble or restrained. 

  • To make chaste. 

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