extent vs infinity

extent

noun
  • The space, area, volume, etc., to which something extends. 

  • A former tent; something (or someone) that was a tent but no longer is 

  • The valuation of property. 

  • A range of values or locations. 

  • A contiguous area of storage in a file system. 

  • A writ directing the sheriff to seize the property of a debtor, for the recovery of debts of record due to the Crown. 

infinity

noun
  • endlessness, unlimitedness, absence of a beginning, end or limits to size. 

  • A number that has an infinite numerical value that cannot be counted. 

  • The symbol ∞. 

  • A number which is very large compared to some characteristic number. For example, in optics, an object which is much further away than the focal length of a lens is said to be "at infinity", as the distance of the image from the lens varies very little as the distance increases further. 

  • An idealised point which is said to be approached by sequences of values whose magnitudes increase without bound. 

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