receptacle vs sac

receptacle

noun
  • A container. 

  • In the Asteraceae (aster or sunflower family), the end of the peduncle to which all of the florets of the flower head are attached. 

  • A contact device installed at an outlet for the connection of an attachment plug (typically by receiving the plug's prongs) to supply portable appliances or equipment. 

  • A structure at the end of a branch of an alga containing conceptacles (reproductive organs). 

  • An organ that receives and holds a secretion. 

  • The part of the flower stalk (peduncle or pedicel) to which the floral parts are attached; a thalamus, a torus. 

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 receptacle and sac occurred in a corpus of books? (source: Google Ngram Viewer )