panorama vs viewport

panorama

noun
  • An unbroken view of an entire surrounding area. 

  • A comprehensive survey. 

  • A picture or series of pictures representing a continuous scene. 

viewport

noun
  • A viewing window. 

  • A typically rectangular region representing the range or area currently visible (within a window, screen, etc.). 

verb
  • To clip (an image or region) so that it fits in a viewport. 

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