Airliners are differentiated between according to whether they are “wide-bodies” or “narrow-bodies”. The difference is startlingly simple to find. Aircraft with one cabin aisle (i.e. Boeing 737, Airbus A320, Boeing 757, etc) are narrow bodies. Aircraft with two cabin aisles (i.e. Boeing 747, Airbus A330, Airbus A380, Boeing 787, etc) are wide bodies.
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