cramming vs tuition

cramming

noun
  • An intensive course of hard study, as for an examination. 

  • The act by which something is crammed, or stuffed full. 

tuition

noun
  • The training or instruction provided by a teacher or tutor. 

  • A sum of money paid for instruction (such as in a high school, boarding school, university, or college). 

  • Paid private classes taken outside of formal education; tutoring. (also used attributively) 

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