bijou vs silver-grey

bijou

noun
  • A small intricate piece of metalwork. 

  • A jewel. 

  • A piece of jewelry; a trinket. 

adj
  • small, little (often implying affection) 

  • intricate; finely made 

  • small and elegant 

silver-grey

noun
  • A shiny pale grey colour. 

adj
  • Of a shiny pale grey colour. 

How often have the words bijou and silver-grey occurred in a corpus of books? (source: Google Ngram Viewer )