Caucasian vs westerner

Caucasian

noun
  • A native or inhabitant of the Caucasus. 

  • A white person. 

  • A group of languages spoken in the Caucasus region. 

  • Synonym of White Russian (“a cocktail consisting of coffee liqueur, milk, and vodka”) 

adj
  • Of or relating to the Caucasus region or its culture, languages, and people. 

  • Of a person: having a white complexion and European ancestry; white. 

westerner

noun
  • A native or inhabitant of the Wild West. (Also written capitalized as Westerner.) 

  • A native or inhabitant of the West, of the Western world—Europe and the Americas. (Also written capitalized as Westerner.) 

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