collage vs ornamentation

collage

noun
  • The technique of producing a work of art of this kind. 

  • A picture made by sticking other pictures onto a surface. 

  • A composite object or collection (abstract or concrete) created by the assemblage of various media; especially for a work of art such as text, film, etc. 

verb
  • To make into a collage. 

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 collage and ornamentation occurred in a corpus of books? (source: Google Ngram Viewer )