erudition vs tuition

erudition

noun
  • The refinement, polish and knowledge that education confers. 

  • Profound knowledge acquired from learning and scholarship. 

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 erudition and tuition occurred in a corpus of books? (source: Google Ngram Viewer )