guiding light vs teacher

guiding light

noun
  • A person who has a profound influence on others and is a source of inspiration. 

  • That which provides guidance in times of uncertainty. 

teacher

noun
  • A person who teaches, especially one employed in a school. 

  • The index finger; the forefinger. 

  • An indication; a lesson. 

  • The second highest office in the Aaronic priesthood, held by priesthood holders of at least the age of 14. 

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