collage vs compilation

collage

noun
  • 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. 

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

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

verb
  • To make into a collage. 

compilation

noun
  • That which is compiled; especially, a book or document composed of materials gathering from other books or documents. 

  • Translation of source code into object code by a compiler. 

  • The act or process of compiling or gathering together from various sources. 

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