clamper vs crampon

clamper

noun
  • An attachment with sharp metal prongs, attached to a boot or shoe to enable the wearer to walk securely upon ice. 

  • One who, or that which, clamps. 

  • A circuit that restricts the amplitude of a waveform. 

verb
  • To complain in an irritating manner. 

  • To crimp. 

  • To move in a noisy and clumsy manner. 

crampon

noun
  • An attachment to a shoe or boot that provides traction by means of spikes. Used for climbing or walking on slippery surfaces, especially ice. 

  • A heraldic figure in the form of a bar bent at the ends into the form of a hook. 

  • An aerial rootlet for support in climbing, as of ivy. 

verb
  • To walk or climb using crampons. 

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