chaffer vs godmother

chaffer

verb
  • To haggle or barter. 

  • To talk much and idly; to chatter. 

  • To buy. 

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

  • bargaining; merchandise 

godmother

verb
  • To act as godmother to. 

noun
  • A woman present at the christening of a baby who promises to help raise the child in a Christian manner; a female godparent who sponsors the baptism of a child. 

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