pacify vs work up

pacify

verb
  • To appease (someone). 

  • To bring peace to (a place or situation), by ending war, fighting, violence, anger or agitation. 

work up

verb
  • To raise; to excite; to stir up. 

  • To give (a patient) a general medical examination to assess health and fitness. 

  • To develop. 

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