chagrin vs confusion

chagrin

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. 

verb
  • To bother or vex; to mortify. 

confusion

noun
  • The act of mistaking one thing for another or conflating distinct things. 

  • A lack of clarity or order. 

  • The state of being confused; misunderstanding. 

  • Lack of understanding due to dementia. 

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