Dorothy bag vs pochette

Dorothy bag

noun
  • A woman’s handbag gathered at the top by a drawstring whose loops are used as a handle; traditionally used by bridesmaids to carry confetti 

pochette

noun
  • A small handbag shaped like an envelope. 

  • Synonym of kit violin 

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