collage vs mosaic

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. 

verb
  • To make into a collage. 

mosaic

noun
  • A composite picture made from overlapping photographs. 

  • A piece of artwork created by placing colored squares (usually tiles) in a pattern so as to create a picture. 

  • Any of several viral diseases that cause mosaic-like patterns to appear on leaves. 

  • pixelization (method of censorship) 

  • An individual composed of two or more cell lines of different genetic or chromosomal constitution, but from the same zygote. 

verb
  • To arrange in a mosaic. 

adj
  • Containing cells of varying genetic constitution. 

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