disguised vs ersatz

disguised

adj
  • Made to appear as something other than it is, hidden in outward form. 

  • Wearing a disguise; dressed in strange or unusual clothes, or taking on a changed appearance, especially to conceal one’s identity. 

ersatz

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

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

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