ersatz vs two-faced

ersatz

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

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

two-faced

adj
  • Deceitful, duplicitous. 

  • Hypocritical. 

  • Having two faces or plane surfaces. 

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