cloak vs disguise

cloak

verb
  • To cover up, hide or conceal. 

  • To render or become invisible via futuristic technology. 

  • To cover as with a cloak. 

noun
  • A long outer garment worn over the shoulders covering the back; a cape, often with a hood. 

  • That which conceals; a disguise or pretext. 

  • A blanket-like covering, often metaphorical. 

  • A text replacement for an IRC user's hostname or IP address, making the user less identifiable. 

disguise

verb
  • To avoid giving away or revealing (something secret); to hide by a false appearance. 

  • To change the appearance of (a person or thing) so as to hide, or to assume an identity. 

noun
  • The act or state of disguising, notably as a ploy. 

  • The appearance of something on the outside which masks what’s beneath. 

  • Material (such as clothing, makeup, a wig) used to alter one’s visual appearance in order to hide one's identity or assume another. 

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