courteous vs rustic

courteous

adj
  • Showing regard or thought for others; especially, displaying good manners or etiquette. 

rustic

noun
  • A noctuoid moth. 

  • Any of various nymphalid butterflies having brown and orange wings, especially Cupha erymanthis. 

  • A (sometimes unsophisticated) person from a rural area. 

adj
  • Country-styled or pastoral; rural. 

  • Crude, rough. 

  • Simple; artless; unaffected. 

  • Unfinished or roughly finished. 

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