airbridge vs jet bridge

airbridge

noun
  • Synonym of jet bridge: an elevated corridor connecting an airport to a plane. 

  • A conductor on an integrated circuit that crosses over other conductors with an air gap introduced between in the wafer manufacturing process. 

  • The route and aircraft used to deliver material by an airlift. 

jet bridge

noun
  • An elevated corridor connecting an airport to a plane, usually enclosed and used for disembarking and embarking passengers and crew. 

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