kiss and tell vs unveil

kiss and tell

verb
  • To betray a confidence by disclosing private information, especially of a sexual nature. 

unveil

verb
  • To remove a veil; to reveal oneself. 

  • to show, especially for the first time 

  • To remove a veil from; to uncover; to reveal something hidden. 

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