perspective vs spectacle

perspective

noun
  • A perspective glass. 

  • A view, vista or outlook. 

  • The choice of a single angle or point of view from which to sense, categorize, measure or codify experience. 

  • The appearance of depth in objects, especially as perceived using binocular vision. 

  • The technique of representing three-dimensional objects on a two-dimensional surface. 

  • The ability to consider things in such relative perspective. 

  • A sound recording technique to adjust and integrate sound sources seemingly naturally. 

adj
  • Of, in or relating to perspective. 

spectacle

noun
  • The brille of a snake. 

  • An embarrassing or unedifying scene or situation. 

  • A frame with different coloured lenses on a semaphore signal through which light from a lamp shines at night, often a part of the signal arm. 

  • An exciting or extraordinary scene, exhibition, performance etc. 

  • An optical instrument consisting of two lenses set in a light frame, worn to assist sight, or to protect the eyes from bright light. 

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