dependence vs reluctance

dependence

noun
  • The state of being dependent, of relying upon another. 

  • An irresistible physical or psychological need, especially for a chemical substance. 

reluctance

noun
  • Hesitancy in taking some action. 

  • That property of a magnetic circuit analogous to resistance in an electric circuit. 

  • Unwillingness to do something. 

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