co-op vs crash pad

co-op

noun
  • A unit of a housing cooperative; a purchased apartment where the apartment owners collectively are responsible for maintenance of common areas and upkeep. 

  • A cooperative game, as opposed to a competitive game or deathmatch. 

  • Any cooperative, including housing, retail, utility, agricultural, banking or worker cooperatives. 

  • Any shop owned by a cooperative. 

verb
  • Synonym of cooperate 

crash pad

noun
  • Any place used for temporary lodging, especially without payment or permission. 

  • A room where one can recover after a bad acid trip. 

  • A protective foam pad placed on the ground, used as protection in case of falling from the wall. 

  • A place of temporary lodging for airline flight crews. 

How often have the words co-op and crash pad occurred in a corpus of books? (source: Google Ngram Viewer )