extent vs magnitude

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. 

magnitude

noun
  • The absolute or relative size, extent or importance of something. 

  • A measure of the energy released by an earthquake (e.g. on the Richter scale). 

  • A number, assigned to something, such that it may be compared to others numerically 

  • An order of magnitude. 

  • Of a vector, the norm, most commonly, the two-norm. 

  • The apparent brightness of a star, with lower magnitudes being brighter; apparent magnitude 

  • A ratio of intensity expressed as a logarithm. 

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