cannonade vs spate

cannonade

noun
  • A loud noise like a cannonade; a booming. 

  • The firing of artillery for a length of time. 

verb
  • To discharge artillery fire upon. 

spate

noun
  • A sudden rush or increase. 

  • A river flood; an overflow or inundation. 

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