lavage vs shake out

lavage

verb
  • To wash a hollow organ 

noun
  • A washing. 

  • A washing of a hollow organ. 

shake out

verb
  • To agitate a piece of cloth or other flexible material in order to remove dust, or to try to make it smooth and flat. 

  • To unfurl a reef from a sail 

  • To result or transpire. 

How often have the words lavage and shake out occurred in a corpus of books? (source: Google Ngram Viewer )