pretense vs slyness

pretense

noun
  • Intention or purpose not real but professed. 

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

  • A false or hypocritical profession 

  • An unsupported claim made or implied. 

slyness

noun
  • The result or product of being sly. 

  • The state or quality of being sly. 

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