spectacles vs spotting scope

spectacles

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. 

  • Synonym of pair (“score of zero runs in both innings”) 

spotting scope

noun
  • A compact high-power monocular telescope optimized for detailed observation of distant objects such as wildlife or the strike of a bullet on a target. 

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