discount vs expansion

discount

verb
  • To deduct from an account, debt, charge, and the like. 

  • To lend money upon, deducting the discount or allowance for interest 

  • To take into consideration beforehand; to anticipate and form conclusions concerning (an event). 

  • To believe, or act as though one believes, that one's own feelings are more important than the reality of a situation. 

  • To leave out of account or regard as unimportant. 

  • To lend, or make a practice of lending, money, abating the discount 

adj
  • Specializing in selling goods at reduced prices. 

noun
  • The act of one who believes, or act as though they believe, that their own feelings are more important than the reality of a situation. 

  • The rate of interest charged in discounting. 

  • A deduction made for interest, in advancing money upon, or purchasing, a bill or note not due; payment in advance of interest upon money. 

  • A lack or shortcoming. 

  • A reduction in price. 

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. 

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