chaffer vs paction

chaffer

noun
  • bargaining; merchandise 

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

verb
  • To talk much and idly; to chatter. 

  • To buy. 

  • To haggle or barter. 

paction

noun
  • A pact, an agreement. 

verb
  • To form a pact; to make a binding agreement. 

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