bourse vs sale

bourse

noun
  • A stock exchange. 

  • Any place, real or imagined, where the value of a thing is settled. 

  • A meeting of stamp collectors and/or dealers, where stamps and covers are sold or exchanged. 

  • The swollen basal part of an inflorescence axis at the onset of fruit development; it bears leaves whose axillary buds differentiate and may grow out as shoots. 

sale

noun
  • An exchange of goods or services for currency or credit. 

  • The act of putting up for auction to the highest bidder. 

  • The sale of goods at reduced prices. 

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