pair of eyeglasses vs sunglasses

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. 

sunglasses

noun
  • Tinted glasses worn to protect the eyes from the sun. 

  • A person wearing sunglasses 

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