lapel pin vs trinket

lapel pin

noun
  • A simple accessory that can be attached to clothing with a pin or fastener, often round and bearing a design, logo or message, and used for decoration, identification or to show political affiliation, etc. 

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 lapel pin and trinket occurred in a corpus of books? (source: Google Ngram Viewer )