gratification vs unrest

gratification

noun
  • The act of gratifying or pleasing, either the mind, or the appetite or taste. 

  • A gratuity; a reward. 

  • A feeling of pleasure; satisfaction. 

unrest

noun
  • A state of trouble, confusion and turbulence, especially in a political context; a time of riots, demonstrations and protests. 

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