lapping vs surging

lapping

noun
  • The process of rubbing away the lands, or metal between the grooves of a rifled gun, to increase the bore. 

  • The rubbing or polishing of a metal surface. 

  • A form of fraud in which payments in the accounts are repeatedly delayed between periods, or diverted between customers, to conceal a theft. 

  • A kind of machine blanket or wrapping material used by calico printers. 

  • Lengths of fine wire, silver, gold, silk or whalebone wrapped tightly around the bow stick adjacent to the leather part of the bow grip at the heel of the bow. 

  • The process of forming a lap or fleece of fibrous material for the carding-machine. 

surging

noun
  • The action or an instance of a surge. 

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