collage vs mishmash

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. 

mishmash

verb
  • To become mixed together. 

  • To mix together, especially in a confused way. 

noun
  • A collection containing a variety of miscellaneous things. 

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