reveal vs secrete

reveal

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

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

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

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

secrete

verb
  • To extract a substance from blood, sap, or similar to produce and emit waste for excretion or for the fulfilling of a physiological function. 

  • To conceal. 

  • To exude or yield. 

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