chaffer vs molar

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. 

molar

noun
  • A back tooth having a broad surface used for grinding one's food. 

  • A unit of concentration equal to one mole per litre. 

adj
  • Of, relating to, or being a solution containing one mole of solute per litre of solution. 

  • Of or relating to a complete body of matter as distinct from its molecular or atomic constituents. 

  • Of or relating to the molar teeth, or to grinding. 

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