draftsmanship vs ornamentation

draftsmanship

noun
  • the skill of drawing 

  • the art or craft of a draftsman 

ornamentation

noun
  • The act or process of decorating etc. 

  • Decoration, adornment or embellishment. 

  • Short notes added to a composition to emphasize certain notes and to add style. 

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