periwig vs toupee

periwig

noun
  • A wig, especially any kind of stylised wig as formerly worn by men and women. 

verb
  • To dress with a periwig, or with false hair; to bewig. 

toupee

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

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