hammering vs turbo

hammering

noun
  • A period of being beaten or hammered. 

  • A heavy defeat. 

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

turbo

noun
  • Autofire. 

  • a turbine 

  • A turban shell. 

verb
  • To autofire. 

adj
  • Very, super, etc.; usually relating to a qualitative value (as opposed to quantitative). 

  • Causing or relating to increased speed. 

  • With rapidly-increasing blind levels. 

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