appetite vs urge

appetite

noun
  • Any strong desire; an eagerness or longing. 

  • Desire to eat food or consume drink. 

  • The desire for some personal gratification, either of the body or of the mind. 

urge

noun
  • A strong desire; an itch to do something. 

verb
  • To press; to push; to drive; to impel; to force onward. 

  • To present in an urgent manner; to insist upon. 

  • To put mental pressure on; to ply with motives, arguments, persuasion, or importunity. 

  • To press onward or forward. 

  • To be pressing in argument; to insist; to persist. 

  • To provoke; to exasperate. 

  • To press hard upon; to follow closely. 

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