ersatz vs inexact

ersatz

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

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

inexact

adj
  • Imperfectly conforming; exceeding or falling short in some respect. 

  • having a path-dependent integral 

  • Imprecisely or indefinitely conceived or stated. 

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