hammering vs pulsing

hammering

noun
  • A period of being beaten or hammered. 

  • A heavy defeat. 

  • A dented appearance on silverware, produced by successive blows of a hammer. 

pulsing

noun
  • The action of something that pulses. 

  • The emission of pulses. 

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