artless vs ersatz

artless

adj
  • Free of artificiality; natural. 

  • Poorly made or done; crude. 

  • Having or displaying no guile, cunning, or deceit. 

  • Lacking art, knowledge, or skill; uncultured and ignorant. 

ersatz

adj
  • Made in imitation; artificial, especially of a poor quality. 

noun
  • Something made in imitation; an effigy or substitute. 

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