ersatz vs suppositious

ersatz

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

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

suppositious

adj
  • Spurious; substituted for the genuine, counterfeit; fake; supposititious. 

  • Imaginary; fictitious, pretended to exist. 

  • Hypothetical, based on supposition; suppositional. 

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