Channel vs Tarn

Channel

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

Tarn

name
  • A river in southwestern France. 

  • A department of Occitanie, France; previously in Midi-Pyrénées (INSEE code 81). 

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