periwig vs syrup of figs

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. 

syrup of figs

noun
  • A wig. 

  • A type of laxative made from figs. 

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