declare vs reveal

declare

verb
  • To explicitly establish the existence of (a variable, function, etc.) without necessarily describing its content. 

  • To make outstanding debts, e.g. taxes, payable. 

  • To show one's cards in order to score. 

  • For a constituency in an election to officially announce the result 

  • To assert or announce formally, officially, explicitly, or emphatically. 

  • For the captain of the batting side to announce the innings complete even though all batsmen have not been dismissed. 

  • To inform government customs or taxation officials of goods one is importing or of income, expenses, or other circumstances affecting one's taxes. 

reveal

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. 

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 declare and reveal occurred in a corpus of books? (source: Google Ngram Viewer )