bike vs motorbike

bike

verb
  • To travel by bike. 

  • To ride a bike. 

  • To transport by bicycle. 

noun
  • A crowd of people. 

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

motorbike

verb
  • To ride a motorbike; to travel by motorbike. 

noun
  • A small and light motorcycle. 

  • A motorcycle. 

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