ersatz vs flexible

ersatz

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

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

flexible

adj
  • Capable or being adapted or molded in some way. 

  • Capable of being flexed or bent without breaking; able to be turned or twisted without breaking. 

  • Willing or prone to give way to the influence of others; not invincibly rigid or obstinate. 

noun
  • Something that is flexible. 

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