boom-boom vs earplug

boom-boom

verb
  • To make a loud, low-pitched sound. 

  • To have sexual intercourse. 

  • To strike or beat. 

adj
  • Resonant; producing a booming sound. 

noun
  • A strike; an act of beating. 

  • Excrement. 

  • Sexual intercourse. 

  • Loud, resonant sound; a repeated loud sound. 

intj
  • Used to draw attention to a pun or weak joke. 

earplug

verb
  • To fit with earplugs. 

noun
  • A piece of protective gear meant to be inserted in the ear canal to protect the wearer's hearing from loud noises or the intrusion of water. 

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