notable vs pole star

notable

noun
  • A person or thing of distinction. 

adj
  • Worthy of note; remarkable; memorable; noted or distinguished. 

  • Easily noted (without connotations of value); clearly noticeable, conspicuous. 

  • That can be observed; perceptible. 

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. 

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