deluge vs salvo

deluge

verb
  • To flood with water. 

  • To overwhelm. 

noun
  • A great flood or rain. 

  • An overwhelming amount of something; anything that overwhelms or causes great destruction. 

  • A system for flooding or drenching a space, container, or area with water in an emergency to prevent or extinguish a fire. 

salvo

verb
  • To discharge weapons in a salvo. 

noun
  • A salute paid by a simultaneous, or nearly simultaneous, firing of a number of cannon. 

  • An exception; a reservation; an excuse. 

  • A concentrated fire from pieces of artillery, as in endeavoring to make a break in a fortification; a volley. 

  • Any volley, as in an argument or debate. 

  • The combined cheers of a crowd. 

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