bike vs pushbike

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. 

pushbike

verb
  • To travel by pushbike. 

noun
  • A pedal bicycle, as distinguished from a motorized bicycle. 

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