townscape vs viewport

townscape

noun
  • A view of a town, or a subjective image of a town 

  • A depiction of an urban scene 

verb
  • To design and lay out (buildings) as a town. 

viewport

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

  • A viewing window. 

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

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