automobile vs bus

automobile

noun
  • A type of vehicle designed to move on the ground under its own stored power and intended to carry a driver, a small number of additional passengers, and a very limited amount of other load. A car or motorcar. 

adj
  • Self-moving; self-propelled. 

bus

noun
  • A motor vehicle for transporting large numbers of people along roads. 

  • An electrical conductor or interface serving as a common connection for two or more circuits or components. 

  • An ambulance. 

  • Part of a MIRV missile, having on-board motors used to deliver the warhead to a target. 

verb
  • To travel by bus. 

  • To transport students to school, often to a more distant school for the purposes of achieving racial integration. 

  • To clear meal remains from. 

  • To transport via a motor bus. 

  • To work at clearing the remains of meals from tables or counters; to work as a busboy. 

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