block out vs reveal

block out

verb
  • to cover something, so as to make it impossible to see. 

  • to prevent from entering or penetrating. 

  • to prevent (a thought) from entering one's mind. 

  • to begin to reduce to shape; to mark out roughly; to lay out. 

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. 

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