collage vs patchwork

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. 

patchwork

verb
  • To create a patchwork from pieces of fabric. 

  • To assemble from a variety of sources; to cobble together. 

noun
  • A work, such as a blanket, composed of many different colors and shapes, sewn together to make an interesting whole. 

  • A state of regulations whose constituents have an opaque scope of application because of their questionable delimitation with regard to each other. 

  • Any kind of creation that utilizes many different aspects to create one whole piece. 

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