collage vs medley

collage

verb
  • To make into a collage. 

noun
  • 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. 

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

medley

verb
  • To combine, to form a medley. 

noun
  • A collection or mixture of miscellaneous things. 

  • A competitive swimming event that combines the four strokes of butterfly, backstroke, breaststroke, and freestyle. 

  • A cloth of mixed colours. 

  • A collection of related songs played or mixed together as a single piece. 

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