appease vs mollify

appease

verb
  • To make quiet; to calm; to reduce to a state of peace; to dispel (anger or hatred). 

  • To come to terms with; to adapt to the demands of. 

mollify

verb
  • To appease (anger), pacify, gain the good will of. 

  • To ease a burden, particularly worry; make less painful; to comfort. 

  • To soften; to make tender 

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