rustic vs unnoble

rustic

adj
  • Simple; artless; unaffected. 

  • Country-styled or pastoral; rural. 

  • Crude, rough. 

  • Unfinished or roughly finished. 

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. 

unnoble

adj
  • Not noble; ignoble; base. 

  • Of a metal, being at the lower end of the electrochemical series, i.e. oxidising readily. 

verb
  • To make (someone or something) no longer noble 

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