centenary vs centuplet

centenary

noun
  • Synonym of centennial: a hundredth anniversary. 

  • Synonym of hundredman: a position in the Anglo-Saxon kingdoms overseeing local administration. 

  • Synonym of centgrave: a position in the Frankish Empire overseeing local administration. 

  • Synonym of hundredweight, especially (historical) in Greek and Roman contexts. 

adj
  • Occurring every 100 years. 

  • Lasting or aged 100 years, 100-year-old. 

centuplet

noun
  • Synonym of hundred: A group of 100. 

  • One of a group of 100, particularly one of 100 babies born at the same time, from the same egg, or from the same DNA. 

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