stir up vs unruffle

stir up

verb
  • To move or disturb slightly; to make turbid. 

  • To arouse or excite (passion or action). 

  • To mix (ingredients) by stirring. 

unruffle

verb
  • To calm or soothe (a person). 

  • To calm down. 

  • To remove ruffles from; to make smooth. 

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