campground vs camping

campground

noun
  • An area where a camp meeting (a retreat) is held. 

  • An area where tents are pitched. 

camping

noun
  • The act of setting up a camp. 

  • The recreational activity of temporarily living in a tent or similar accommodation, usually in the wilderness. 

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