cud vs nibble

cud

verb
  • To bring back into the mouth and chew a second time. 

noun
  • The portion of food which is brought back into the mouth by ruminating animals from their first stomach, to be chewed a second time. 

nibble

verb
  • To bite lightly. 

  • To eat with small, quick bites. 

  • To consume gradually. 

  • To find fault; to cavil. 

noun
  • A unit of memory equal to half a byte, or four bits. 

  • Small snacks such as crisps/potato chips or nuts, often eaten to accompany drinks. 

  • A small, quick bite taken with the front teeth. 

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