centennium vs kingdom come

centennium

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

kingdom come

noun
  • A future period of happiness, peace, prosperity, and/or great progress; a golden age that is approaching. 

  • Death; also, a state of complete annihilation. 

  • The rule of God over the world in the future; especially, according to those believing in millenarianism, during a period of peace beginning with the second coming of Jesus Christ and lasting a millennium. 

  • Heaven or paradise. 

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