ambivalence vs reluctance

ambivalence

noun
  • A state of uncertainty or indecisiveness. 

  • The coexistence of opposing attitudes or feelings (such as love and hate) towards a person, object or idea. 

reluctance

noun
  • Unwillingness to do something. 

  • Hesitancy in taking some action. 

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

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