chagrin vs disquiet

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. 

disquiet

verb
  • To make (someone or something) worried or anxious. 

noun
  • Lack of quiet; absence of tranquility in body or mind 

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