billfold vs clutch bag

billfold

noun
  • A small, folding sleeve or case designed to hold paper currency, as well as credit cards, pictures, etc. 

clutch bag

noun
  • A small handbag without a shoulder strap, designed to be held in the hand. 

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