extent vs measurement

extent

noun
  • A range of values or locations. 

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

  • The valuation of property. 

  • A contiguous area of storage in a file system. 

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

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

measurement

noun
  • Value (quantity, magnitude, extent or amount) determined by an act of measuring. 

  • The act of measuring. 

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