ambivalence vs hesitancy

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. 

hesitancy

noun
  • A pausing or halting before beginning a task, often as a result of some fear or uncertainty about the outcome. 

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