nonlife vs unexistence

nonlife

noun
  • A life so devoid of meaning or activity that it is barely worth living. 

  • All objects or substances except those considered alive. 

adj
  • Relating to types of insurance which are not life insurance 

unexistence

noun
  • Lack of existence. 

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