pair of tongs vs pincers

pair of tongs

noun
  • A tool used for picking things up without touching them with the hands or fingers, consisting of two slats or grips hinged at the end or in the middle, and sometimes including a spring to open the grips. 

pincers

noun
  • A gripping tool, pivoted like a pair of scissors, but with blunt jaws. 

  • The front claws of crustaceans such as lobsters. 

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