fragmentize vs pestle

fragmentize

verb
  • To break, cut, or otherwise separate (something) into fragments. 

  • To fall into or become separated into fragments. 

pestle

verb
  • To pound, crush, rub or grind, as in a mortar with a pestle. 

noun
  • The leg and leg bone of an animal, especially of a pig. 

  • A club-shaped, round-headed stick used in a mortar to pound, crush, rub or grind things. 

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