bike vs slapper

bike

noun
  • A crowd of people. 

  • A hive of bees, or a nest of wasps, hornets, or ants. 

verb
  • To ride a bike. 

  • To travel by bike. 

  • To transport by bicycle. 

slapper

noun
  • A type of detonator which uses a powerful surge of electricity to vaporize a thin metal foil, propelling a larger piece of plastic film at a speed high enough to detonate an explosive upon impact. 

  • One who, or that which, slaps. 

  • A woman of loose morals. 

  • A prostitute. 

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