ectype vs ersatz

ectype

noun
  • An object in relievo or embossed. 

  • A copy, reproduction; especially as contrasted with the original, archetype, or prototype. 

  • An idea or impression that corresponds to external reality. 

  • An impression (in wax, clay, &c.) of a seal or medal. 

ersatz

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

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

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