disclose vs sit on

disclose

verb
  • To uncover, physically expose to view. 

  • To expose to the knowledge of others; to make known, state openly, reveal. 

sit on

verb
  • Used other than figuratively or idiomatically: see sit, on. 

  • To take no action on; to hold in reserve without actually using. 

  • To hold an official inquiry regarding; to deliberate about. 

  • To block, suppress, restrain. 

  • To be a member of. 

  • To restrain (a person). 

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