daring vs unconfidence

daring

noun
  • Boldness. 

adj
  • Racy; sexually provocative. 

  • Courageous or showing bravery; doughty. 

  • Adventurous, willing to take on or look for risks; overbold. 

unconfidence

noun
  • Absence of confidence; uncertainty; doubt. 

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