abdicate vs succeed to

abdicate

verb
  • To relinquish or renounce a throne, or other high office or dignity; to renounce sovereignty. 

  • To surrender, renounce or relinquish, as sovereign power; to withdraw definitely from filling or exercising, as a high office, station, dignity; to fail to fulfill responsibility for. 

succeed to

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