estimate vs porism

estimate

noun
  • An upper limitation on some positive quantity. 

  • A rough calculation or assessment of the value, size, or cost of something. 

  • A document (or verbal notification) specifying how much a job is likely to cost. 

verb
  • To judge and form an opinion of the value of, from imperfect data. 

  • To calculate roughly, often from imperfect data. 

porism

noun
  • A proposition affirming the possibility of finding such conditions as will render a certain determinate problem indeterminate or capable of innumerable solutions. 

  • A corollary. 

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