disgorge vs keep down

disgorge

verb
  • To vomit or spew, to discharge. 

  • To remove traces of yeast from sparkling wine by the méthode champenoise. 

  • To surrender (stolen goods or money, for example) unwillingly. 

keep down

verb
  • Not to vomit. 

  • To cause not to increase or rise. 

  • To repress. 

  • To restrain or control (a sound). 

  • To lie low. To stay concealed by not standing up 

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