ersatz vs microfiche

ersatz

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

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

microfiche

noun
  • A sheet of microfilm, six by four inches, holding several hundred reduced images of document pages, read using a microfiche reader or microfilm reader. 

  • A device used to magnify and read these sheets. 

verb
  • To convert (documents) to microfiche format. 

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