tweezer vs tweezers

tweezer

noun
  • A pair of tweezers, tweezers. 

adj
  • tweezers. 

verb
  • To use tweezers. 

tweezers

noun
  • A small pincerlike instrument, usually made of metal, used for handling or picking up small objects (such as postage stamps), plucking out (plucking) hairs, pulling out slivers, etc. 

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