centennium vs hundreder

centennium

noun
  • Synonym of century: A period of 100 years. 

hundreder

noun
  • Synonym of hundredman: An administrator overseeing a hundred. 

  • An inhabitant or freeholder of a hundred, hence (law) a person eligible for jury duty within a hundred. 

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