chaffer vs muckrake

chaffer

noun
  • The upper sieve of a cleaning shoe in a combine harvester, where chaff is removed 

  • bargaining; merchandise 

verb
  • To talk much and idly; to chatter. 

  • To buy. 

  • To haggle or barter. 

muckrake

noun
  • A rake for scraping up dung. 

verb
  • To search for and expose corruption or scandal, especially as a form of investigative journalism. 

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