agitate vs unruffle

agitate

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

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

unruffle

verb
  • To calm or soothe (a person). 

  • To calm down. 

  • To remove ruffles from; to make smooth. 

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