give the game away vs uncover

give the game away

verb
  • To mistakenly reveal a secret. 

uncover

verb
  • To show openly; to disclose; to reveal. 

  • To remove one's hat or cap as a mark of respect. 

  • To reveal the identity of. 

  • To expose the genitalia. 

  • To remove a cover from. 

  • To expose (lines of formation of troops) successively by the wheeling to right or left of the lines in front. 

How often have the words give the game away and uncover occurred in a corpus of books? (source: Google Ngram Viewer )