bauble vs silvering

bauble

noun
  • A cheap showy ornament piece of jewellery; a gewgaw. 

  • Anything trivial and worthless. 

  • A small shiny spherical decoration, commonly put on Christmas trees. 

  • A club or sceptre carried by a jester. 

silvering

noun
  • The silver used in this kind of coating. 

  • The process of coating a surface with a thin layer of silver (or a similar metal), especially so as to form a mirror. 

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