Circle vs Mainland

Circle

name
  • A census-designated place in Yukon-Koyukuk Census Area, Alaska, United States. Erroneously thought to be on the Arctic Circle, which is 50 miles further north. 

  • A town, the county seat of McCone County, Montana, United States. Named after a cattle brand in the form of a circle. 

  • the Circle line of the London Underground, originally the Inner Circle. 

  • A surname from German. 

Mainland

name
  • The largest island in the Shetland Islands council area, to the north of both Orkney and Scotland. 

  • The largest island in the Orkney Islands council area, to the north of Scotland. 

  • A historical region in British Columbia, British North America, British Empire 

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