past one's prime vs venerable

past one's prime

prep
  • No longer in an ideal condition. 

venerable

adj
  • Giving an impression of aged goodness and benevolence. 

  • Commanding respect because of age, dignity, character or position. 

  • Made sacred especially by religious or historical association. 

  • Ancient, antiquated or archaic. 

  • Worthy of reverence. 

How often have the words past one's prime and venerable occurred in a corpus of books? (source: Google Ngram Viewer )