quandary vs unconfidence

quandary

noun
  • A state of not knowing what to decide; a state of difficulty or perplexity; a state of uncertainty, hesitation or puzzlement. 

  • A dilemma, a difficult decision or choice. 

unconfidence

noun
  • Absence of confidence; uncertainty; doubt. 

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