clacket vs pitter-patter

clacket

verb
  • To move with a clackety sound. 

  • To chatter or prattle. 

pitter-patter

noun
  • A soft, percussive sound, as of tiny feet, or of rain on a rooftop. 

How often have the words clacket and pitter-patter occurred in a corpus of books? (source: Google Ngram Viewer )