bus vs double-decker

bus

noun
  • 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. 

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

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. 

double-decker

noun
  • Any object with two layers or parts stacked on top of each other. 

  • A sandwich with three slices of bread, whose toppings are on both sides of the middle slice. 

  • A vehicle (usually a bus, coach or train) or aircraft with two floors. 

  • A headline that is two lines long. 

  • a man who both penetrates (top) and is penetrated (bottom) in sex with other men; sometimes also has relationships with women and/or presents masculine as well as feminine mannerisms and appearances. 

  • A frigate with two decks above the waterline. 

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