binoculars vs pair of eyeglasses

binoculars

noun
  • A hand-held device consisting of a series of lenses and prisms, used to magnify objects so that they can be better seen from a distance, and looked at through both eyes. 

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. 

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