kit violin vs wallet

kit violin

noun
  • A very small long-necked violin that came in a variety of shapes and configurations, meant to be carried in a pocket and intended for dancing instructors to carry to accompany their students. 

wallet

noun
  • A small case, often flat and often made of leather, for keeping money (especially paper money), credit cards, etc. 

  • A person's bank account or assets. 

  • An e-wallet or digital wallet. 

  • A thick case or folder with plastic sleeves in which compact discs may be stored. 

  • A person's buttocks (the area of the body nearest where one keeps one's wallet). 

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