extensity vs importance

extensity

noun
  • The degree to which something is extensive 

  • The state of being extensive or of having extension 

importance

noun
  • Something of importance. 

  • The quality or condition of being important or worthy of note. 

  • personal status or standing. 

  • significance or prominence. 

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