concealment vs guise

concealment

noun
  • The condition of being hidden or concealed. 

  • The practice of keeping secrets. 

  • protection from observation or surveillance. 

guise

noun
  • Misleading appearance; cover, cloak. 

  • External appearance in manner or dress; appropriate indication or expression; garb; shape. 

  • Customary way of speaking or acting; fashion, manner, practice (often used formerly in such phrases as "at his own guise"; that is, in his own fashion, to suit himself.) 

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