container deposit vs pay-off

container deposit

noun
  • A monetary deposit on a beverage or other container at the point of sale, refundable when the container is returned for reuse, recycling or proper disposal. 

pay-off

noun
  • A payment. 

  • A reward. 

  • A bribe. 

  • A resolution or justification of an event that has already occurred, especially in fiction. 

How often have the words container deposit and pay-off occurred in a corpus of books? (source: Google Ngram Viewer )