pair of eyeglasses vs pince-nez

pair of eyeglasses

noun
  • A pair of lenses set in a frame worn on the nose and ears in order to correct deficiencies in eyesight or to ornament the face. 

pince-nez

noun
  • temple-less eyeglasses that clip to the bridge of the nose 

How often have the words pair of eyeglasses and pince-nez occurred in a corpus of books? (source: Google Ngram Viewer )