Western vs occidental

Western

adj
  • Of or pertaining to a certain genre of film, television, literature, and so on, dealing with the American Old West. 

  • Of, situated in, or related to the West 

name
  • A village in Saline County, Nebraska, United States. 

  • A surname. 

  • A town in Oneida County, New York, United States. 

occidental

adj
  • Of a gem or precious stone: of inferior value or quality. 

  • Of, pertaining to, or situated in, the occident, or west; western. 

noun
  • A Western Christian of the Latin rite 

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