cultivate vs tutor

cultivate

verb
  • To nurture; to foster; to tend. 

  • To turn or stir soil in preparation for planting. 

  • To grow plants, notably crops. 

tutor

verb
  • To instruct or teach, especially an individual or small group. 

  • To fetch a card from one's deck. 

noun
  • One who teaches another (usually called a student, learner, or tutee) in a one-on-one or small-group interaction. 

  • A card that allows one to search one's deck for one or more other cards. 

  • A university officer responsible for students in a particular hall. 

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