calculation vs extrapolation

calculation

noun
  • The result of calculating. 

  • Reckoning, estimate. 

  • The act or process of calculating. 

  • An expectation based on circumstances. 

  • The act or process of imagining sequences of potential moves and responses without actually moving the pieces. 

extrapolation

noun
  • A calculation of an estimate of the value of some function outside the range of known values. 

  • The diametric opposite of interpolation. 

  • An inference about some hypothetical situation based on known facts. 

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