cave in vs pouch

cave in

noun
  • The act of relenting. 

  • The location where something has caved in. 

  • The act of something collapsing or caving in. 

verb
  • To collapse inward or downward. 

  • To relent; to grant approval against one's initial will. 

pouch

verb
  • To enclose within a pouch. 

  • To transport within a pouch, especially a diplomatic pouch. 

  • To swallow. 

noun
  • Any pocket or bag-shaped object, such as a cheek pouch. 

  • A small bag usually closed with a drawstring. 

  • A cyst or sac containing fluid. 

  • A silicle, or short pod, as of the shepherd's purse. 

  • A bulkhead in the hold of a vessel, to prevent grain etc. from shifting. 

  • An organic pocket in which a marsupial carries its young. 

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