duplicitous vs ersatz

duplicitous

adj
  • Given to or marked by deliberate deceptiveness in behavior or speech. 

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 duplicitous and ersatz occurred in a corpus of books? (source: Google Ngram Viewer )