concealment vs pretense

concealment

noun
  • The condition of being hidden or concealed. 

  • The practice of keeping secrets. 

  • protection from observation or surveillance. 

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 

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