approximation vs foreguess

approximation

noun
  • An imprecise solution or result that is adequate for a defined purpose. 

  • The act of bringing together the edges of tissue to be sutured. 

  • The act, process or result of approximating. 

foreguess

noun
  • A conjecture; an assumption. 

verb
  • To forecast. 

  • To guess beforehand. 

  • To conjecture; assume. 

  • To anticipate; expect. 

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