centenarian vs venerable

centenarian

adj
  • Of or relating to centenarians or a centenary celebration. 

  • Aged 100 years or more; extremely old. 

noun
  • One who or that which is at least 100 years old. 

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 centenarian and venerable occurred in a corpus of books? (source: Google Ngram Viewer )