indiscretion vs lunacy

indiscretion

noun
  • An indiscreet or imprudent act; indiscreet behavior. 

  • The quality or state of being indiscreet; lack of discretion 

  • A brief sexual liaison. 

lunacy

noun
  • insanity implying legal irresponsibility. 

  • a cyclical mental disease, apparently linked to the lunar phases 

  • Something deeply misguided. 

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