Channel vs Frontier

Channel

name
  • A former village, a district of Channel-Port aux Basques, Newfoundland, Newfoundland and Labrador, Canada 

Frontier

name
  • A village in Saskatchewan, Canada. 

  • An unincorporated community in Lincoln County, Wyoming. 

  • An unincorporated community in Koochiching County, Minnesota, United States, located on the Canadian border. 

  • A city in North Dakota. 

  • The Rural Municipality of Frontier No. 19, a rural municipality on the US border in south-west Saskatchewan, which includes the village. 

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