biography vs collage

biography

noun
  • The art of writing this kind of story. 

  • A person's life story, especially one published. 

verb
  • To write a biography of. 

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. 

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