eyewear vs pair of eyeglasses

eyewear

noun
  • A vision aid or similar device worn over the eyes, such as eyeglasses, contact lenses, or protective goggles. 

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 eyewear and pair of eyeglasses occurred in a corpus of books? (source: Google Ngram Viewer )