EDGE vs tutelage

EDGE

noun
  • Explain, demonstrate, guide, enable; an educating method. 

  • Notation for an edge rusher. 

tutelage

noun
  • Instruction; teaching; guidance. 

  • The act of guarding, protecting, or guiding; guardianship; protection 

  • The state of being under a guardian or a tutor; care or protection enjoyed. 

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