ambivalence vs sureness

ambivalence

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

  • A state of uncertainty or indecisiveness. 

sureness

noun
  • The property of being sure, deft, confident of ability. 

  • The property of being sure, certainty. 

  • The result or product of being sure. 

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