guise vs masking

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.) 

masking

noun
  • The act by which something is masked; the act of masking, of concealing or disguising. 

  • The practice of wearing safety masks, such as face masks. 

  • An entertainment at which the guests conceal their faces with masks. 

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