expansion vs summary

expansion

noun
  • A new addition. 

  • A product to be used with a previous product. 

  • That which is expanded; expanse; extended surface. 

  • The operation of steam in a cylinder after its communication with the boiler has been cut off, by which it continues to exert pressure upon the moving piston. 

  • The replacement of a short name (e.g., acronym, initialism, alphanumeric symbol, abbreviation) with the longer name that is synonymous with it, as when spelling out acronyms to ensure clarity for a general audience. 

  • The string of text thus substituted. 

  • An act, process, or instance of expanding. 

  • The fractional change in unit length per unit length per unit temperature change. 

summary

noun
  • An abstract or a condensed presentation of the substance of a body of material. 

adj
  • Performed speedily and without formal ceremony. 

  • Concise, brief or presented in a condensed form 

  • Performed by skipping the procedures of a standard and fair trial. 

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