pretense vs untruthfulness

pretense

noun
  • A false or hypocritical profession 

  • An insincere attempt to reach a specific condition or quality. 

  • Intention or purpose not real but professed. 

  • An unsupported claim made or implied. 

untruthfulness

noun
  • The state of being untruthful; dishonesty. 

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