cufflink vs fibula

cufflink

noun
  • A button or stud used to hold a sleeve cuff together. 

fibula

noun
  • An ancient kind of brooch used to hold clothing together, similar in function to the modern safety pin. 

  • The smaller of the two bones in the lower leg. 

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