cognizance vs memorization

cognizance

noun
  • Notice or awareness. 

  • An emblem, badge or device, used as a distinguishing mark by the body of retainers of a royal or noble house. 

  • Jurisdiction. 

memorization

noun
  • The act of committing something to memory or memorizing. 

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