chagrin vs encouragement

chagrin

verb
  • To bother or vex; to mortify. 

noun
  • Distress of mind caused by a failure of aims or plans, want of appreciation, mistakes etc; vexation or mortification. 

  • A type of leather or skin with a rough surface. 

encouragement

noun
  • Words or actions that increase someone's confidence 

  • Something that incites, supports, promotes, protects or advances; incentive 

  • The feeling of being encouraged 

  • The act of encouraging 

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