governorship vs regime

governorship

noun
  • The office, or the term of a governor. 

regime

noun
  • A form of government, or the government in power. 

  • A division of a Mafia crime family, led by a caporegime. 

  • A set of characteristics. 

  • A period of rule. 

  • Mode of rule or management. 

  • A regulated system; a regimen. 

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