centennium vs long haul

centennium

noun

  • Synonym of century: A period of 100 years. 

long haul

noun

  • A long time; the long term; an extended period. 

  • a long distance 

adj

  • Travelling a long distance. 

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