pouch vs sac

pouch

noun
  • A small bag usually closed with a drawstring. 

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

  • 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. 

verb
  • To enclose within a pouch. 

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

  • To swallow. 

sac

noun
  • A bag or pouch inside a plant or animal that typically contains a fluid. 

  • A sacrifice. 

  • The privilege, formerly enjoyed by the lord of a manor, of holding courts, trying causes, and imposing fines; now used only in the phrase sac and soc or soc and sac. 

verb
  • To sacrifice. 

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