bachelorette vs mademoiselle

bachelorette

noun
  • An unmarried woman. 

  • A very small bachelor (single room) apartment. 

mademoiselle

noun
  • Courtesy title for an unmarried woman in France or a French-speaking country. 

  • A young woman or girl, especially one who is French or French-speaking. 

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