costume jewellery vs fol-de-rol

costume jewellery

noun
  • Inexpensive jewellery, made of glass and other non-precious materials. 

fol-de-rol

noun
  • A gaudy thing of little value; a trinket. 

  • Excessive efforts expended on a something trivial; much ado about nothing. 

  • Nonsense. 

intj
  • Nonsense word traditional to English ballads and madrigals. 

How often have the words costume jewellery and fol-de-rol occurred in a corpus of books? (source: Google Ngram Viewer )