purfling vs trimming

purfling

noun
  • An ornament consisting of a bordure of ermines, furs, etc. or gold studs or mountings. 

  • Two or more very narrow strips of black wood enclosing a lighter-coloured strip of wood set close to the edge of the top and back of a string instrument such as a violin, cello or a guitar, following its outline, or this effect simulated with paint. 

trimming

noun
  • An ornamental accessory to a dress or other piece of clothing. 

  • The act or process of someone who trims. 

  • An instance of that act or process. 

  • An accessory or accompaniment. 

  • Material that is removed by someone trimming something, as a piece of steak. 

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