click-clack vs drumming

click-clack

verb
  • To move with alternate clicking and clacking sounds. 

drumming

noun
  • A noise resembling that of a drum being beaten. 

  • In many species of catfish, the sound produced by contraction of specialized sonic muscles with subsequent reverberation through the swim bladder. 

  • The act of beating a drum. 

How often have the words click-clack and drumming occurred in a corpus of books? (source: Google Ngram Viewer )