appetite vs want-to

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. 

want-to

noun
  • Intention, desire. 

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