non-payment vs wampum

non-payment

noun
  • Antonym: payment 

wampum

noun
  • Money. 

  • Small beads made from polished shells, especially white ones, formerly used as money and jewelry by certain Native American peoples. 

  • A string of such beads. 

How often have the words non-payment and wampum occurred in a corpus of books? (source: Google Ngram Viewer )