centuplet vs hundredary

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. 

hundredary

noun
  • Synonym of hundredman (“administrator of a hundred”) 

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