computer graphics vs etching

computer graphics

noun
  • The images so produced. 

  • The various technologies used to create and manipulate such pictorial data. 

  • A sub-field of computer science which studies methods for digitally synthesizing and manipulating visual content. 

  • The representation and manipulation of pictorial data by a computer. 

etching

noun
  • The image created by this process. 

  • The art of producing an image from a metal plate into which an image or text has been etched with acid. 

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