hire purchase vs long finger

hire purchase

noun
  • A method of purchasing an item, where the buyer hires it and takes possession of it and pays regular installments. Ownership is only transferred on payment of the final amount. Abbreviated as HP. 

long finger

noun
  • Hire purchase or credit. 

  • A state of postponement or procrastination. 

  • The middle finger. 

How often have the words hire purchase and long finger occurred in a corpus of books? (source: Google Ngram Viewer )