approbation vs audacity

approbation

noun
  • The act of approving; an assenting to the propriety of a thing with some degree of pleasure or satisfaction; approval, sanction, commendation or official recognition. 

audacity

noun
  • Fearlessness, intrepidity or daring, especially with confident disregard for personal safety, conventional thought, or other restrictions. 

  • Insolent boldness, especially when imprudent or unconventional. 

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