bombard vs pom-pom

bombard

noun
  • a medieval primitive cannon, used chiefly in sieges for throwing heavy stone balls. 

  • A bombardment. 

  • A bombardon. 

verb
  • To direct at a substance an intense stream of high-energy particles, usually sub-atomic or made of at most a few atoms. 

  • To attack something or someone by directing objects at them. 

  • To continuously attack something with bombs, artillery shells or other missiles or projectiles. 

  • To continuously send or direct (at someone) 

pom-pom

noun
  • A rapid-firing small-calibre cannon used especially as an anti-aircraft gun. 

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