formal parameter vs rationalization

formal parameter

noun
  • An abstract representation, typically including a name and a type, of a parameter expected to be passed to a method or function. 

rationalization

noun
  • The simplification of an expression without changing its value. 

  • The concealment of true motivation in some non-threatening way. 

  • The process or result of rationalizing. 

  • A reorganization of a company or organization in order to improve its efficiency. 

  • A statement of one's motives, or of the causes of some event. 

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