reveal vs unearth

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. 

unearth

verb
  • To uncover or find; to bring out from concealment 

  • To drive or draw from the earth. 

  • To dig up. 

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