gratification vs need

gratification

noun
  • A gratuity; a reward. 

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

  • A feeling of pleasure; satisfaction. 

need

noun
  • A requirement for something; something needed. 

  • Lack of means of subsistence; poverty; indigence; destitution. 

verb
  • To be obliged or required (to do something). 

  • To be required; to be necessary. 

  • To want strongly; to feel that one must have something. 

  • To have an absolute requirement for. 

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