extensity vs leeway

extensity

noun
  • The degree to which something is extensive 

  • The state of being extensive or of having extension 

leeway

noun
  • A varying degree or amount of freedom or flexibility. 

  • An adverse discrepancy or variation in a cumulative process, usually in the phrase make up leeway. 

  • The drift of a ship or aeroplane in a leeward direction. 

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