reveal vs unmask

reveal

verb
  • To uncover; to show and display that which was hidden. 

  • To communicate that which could not be known or discovered without divine or supernatural instruction. 

noun
  • The outer side of a window or door frame. 

  • A revelation; an uncovering of what was hidden in the scene or story. 

unmask

verb
  • To expose, or reveal the true character of someone. 

  • To cease engaging in masking, to cease disguising one's autism. 

  • To enable (an interrupt, etc.) by unsetting or setting the associated bit. 

  • To remove a mask from someone. 

  • To remove one's mask. 

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