foreground vs tradition

foreground

noun
  • The application the user is currently interacting with; the application window that appears in front of all others. 

  • The elements of an image which lie closest to the picture plane. 

  • The subject of an image, often depicted at the bottom in a two-dimensional work. 

verb
  • To place in the foreground (physically or metaphorically). 

tradition

noun
  • The act of delivering into the hands of another; delivery. 

  • An established or distinctive style or method 

  • A part of culture that is passed from person to person or generation to generation, possibly differing in detail from family to family, such as the way to celebrate holidays. 

  • A commonly held system. 

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