contrast vs differentiation

contrast

noun
  • A difference between two objects, people or concepts. 

  • Something that is opposite of or strikingly different from something else. 

  • A control on a television, etc, that adjusts the amount of contrast in the images being displayed. 

  • Antithesis. 

  • is a substance used to increase the contrast of structures or fluids within the body in medical imaging. 

  • The degree of this difference. 

verb
  • To form a contrast. 

  • To set in opposition in order to show the difference or differences between. 

differentiation

noun
  • The act of treating one thing as distinct from another, or of creating such a distinction; of separating a class of things into categories; of describing a thing by illustrating how it is different from something else. 

  • The process of separation of cooling magma into various rock types. 

  • The process of applying the derivative operator to a function; of calculating a function's derivative. 

  • The evolutionary process by which one taxonomic group (species, genus, variety, etc.) becomes distinct from another, or acquires distinct features; the result of such a process: distinctness. 

  • The process of developing distinct components. 

  • The process by which the components of multicellular life (cells, organs, etc.) are produced and acquire function, as when a seed develops the root and stem, and the initial stem develops the leaf, branches, and flower buds. 

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