chewing vs nibble

chewing

noun
  • The act by which something is chewed on; mastication. 

  • The consumption of (the juice from) the khat plant. 

  • The consumption of loose leaf tobacco juice from tobacco plants by chewing leaves near the cheek. 

nibble

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

  • 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. 

verb
  • To eat with small, quick bites. 

  • To bite lightly. 

  • To consume gradually. 

  • To find fault; to cavil. 

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