pedagogue vs teacher

pedagogue

noun
  • A teacher or instructor of children; one whose occupation is to teach the young. 

  • A pedant; one who by teaching has become overly formal or pedantic in his or her ways; one who has the manner of a teacher. 

  • A slave who led the master's children to school, and had the charge of them generally. 

verb
  • To teach. 

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 pedagogue and teacher occurred in a corpus of books? (source: Google Ngram Viewer )