foulard vs pocket handkerchief

foulard

noun
  • A piece of clothing, or a handkerchief, made with this fabric. 

  • A lightweight silk or silk-and-cotton fabric, often with a printed pattern. 

pocket handkerchief

noun
  • handkerchief 

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