vantage point vs viewport

vantage point

noun
  • A camera angle. 

  • A point of view; perspective; outlook; standpoint. 

  • A place or position affording a good view. 

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 vantage point and viewport occurred in a corpus of books? (source: Google Ngram Viewer )