pretense vs untruth

pretense

noun
  • An unsupported claim made or implied. 

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

  • Intention or purpose not real but professed. 

  • A false or hypocritical profession 

untruth

noun
  • A lie or falsehood. 

  • The condition of being false; truthlessness. 

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