expansion vs recap

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. 

recap

noun
  • A tire that has had new tread glued on. 

  • A leveraged recapitalization accomplished by increasing the debt to equity ratio. 

  • A recapitulation. 

verb
  • To replace the worn tread on a tire by gluing a new outer portion. (US English only - Retread in UK English) 

  • To seal (something) again with a cap. 

  • To recapitulate. 

  • To replace capacitors in electronic equipment. 

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