costume jewellery vs trinket

costume jewellery

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

trinket

noun
  • A small showy ornament or piece of jewelry 

  • A thing of little value; a trifle; a toy. 

  • A three-cornered sail formerly carried on a ship's foremast, probably on a lateen yard. 

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