pole star vs politician

pole star

noun
  • A person, principle, or thing which acts as a guide; a guiding light; also, something which attracts much attention; a centre of attention. 

  • The star visible to the naked eye which was in the past, is now, or will be in the future nearest a celestial pole of a planet. 

politician

noun
  • A sly or ingratiating person. 

  • Specifically, one who regards elected political office as a career. 

  • One engaged in politics, especially an elected or appointed government official. 

  • A politically active or interested person. 

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