compress vs unfold

compress

verb
  • To abridge. 

  • To make digital information smaller by encoding it using fewer bits. 

  • To be pressed together or folded by compression into a more economic, easier format. 

  • To make smaller; to press or squeeze together, or to make something occupy a smaller space or volume. 

  • To condense into a more economic, easier format. 

noun
  • A multiply folded piece of cloth, a pouch of ice etc., used to apply to a patient's skin, cover the dressing of wounds, and placed with the aid of a bandage to apply pressure on an injury. 

  • A machine for compressing. 

unfold

verb
  • To reveal. 

  • To undo a folding. 

  • To release from a fold or pen. 

  • To turn out; to happen; to develop. 

  • To open (anything covered or closed); to lay open to view or contemplation; to bring out in all the details, or by successive development. 

noun
  • In functional programming, a kind of higher-order function that is the opposite of a fold. 

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