fold up vs shake out

fold up

verb
  • To make or become more compact by folding. 

  • To go out of business. 

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 fold up and shake out occurred in a corpus of books? (source: Google Ngram Viewer )