c-note vs centennial

c-note

noun
  • A one-hundred dollar banknote. 

  • The lowest note of an instrument, written below the staff and the D note. 

centennial

noun
  • The hundredth anniversary of an event or happening. 

adj
  • Relating to, or associated with, the commemoration of an event that happened a hundred years before. 

  • Happening once in a hundred years. 

  • Lasting or aged a hundred years. 

How often have the words c-note and centennial occurred in a corpus of books? (source: Google Ngram Viewer )