elector vs princeling

elector

noun
  • A person eligible to vote in an election; a member of an electorate, a voter. 

  • A member of an electoral college; specifically (US) an official selected by a state as a member of the Electoral College to elect the president and vice president of the United States. 

  • A person eligible to vote to elect a Member of Parliament. 

princeling

noun
  • A minor or unimportant prince. 

  • A descendant of some prominent and influential senior communist official in the People's Republic of China. 

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