postiche vs toupee

postiche

noun
  • Any item of false hair worn on the head or face, such as a false beard or wig. 

adj
  • Added after the work is finished. 

toupee

noun
  • A wig of false hair worn to cover a bald spot, especially as worn by a man. 

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