mademoiselle vs signorina

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. 

signorina

noun
  • A courtesy title for an unmarried woman of Italian origin. 

  • maitake, hen of the woods (mushroom) 

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