endurance vs shelf life

endurance

noun
  • The length of time that a ship's rations will supply 

  • The measure of a person's stamina or persistence. 

  • Ability to endure hardship. 

shelf life

noun
  • The length of time a product (especially food and drugs) will last without deteriorating or without being sold. 

  • The maximum time a packaged material can be stored under specific conditions and still meet the performance requirements specified. 

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