
der Korridor
corridor
A long, narrow hallway in a building, with doors leading off to different rooms.
Die Hotelzimmer befanden sich alle entlang eines langen Korridors.
The hotel rooms were all located along a long corridor.
corridor
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corridor
A long, narrow hallway in a building, with doors leading off to different rooms.
Die Hotelzimmer befanden sich alle entlang eines langen Korridors.
The hotel rooms were all located along a long corridor.

corridor
In geography and politics, a narrow strip of land that connects one area with another or provides access to the sea.
Der Danziger Korridor war ein politisch umstrittenes Gebiet vor dem Zweiten Weltkrieg.
The Polish Corridor was a politically disputed area before the Second World War.

corridor
A designated route for traffic, especially for airplanes (air corridor) or ships.
Die Flugzeuge müssen sich strikt an den vorgegebenen Korridor halten.
The airplanes must strictly keep to the designated corridor.
All meanings of 'Korridor' (corridor) share the basic idea of a long, narrow passage or strip that connects two points or areas. This idea applies to buildings, geography, and traffic.
Ein schmaler Korridor aus Bäumen führte zum See.
A narrow corridor of trees led to the lake.
For the hallway in a building, the prepositions are important. You are 'im Korridor' (in the corridor; dative, location), or you go 'durch den Korridor' (through the corridor) or 'den Korridor entlang' (along the corridor; accusative, movement).
Die Kinder dürfen im Korridor nicht rennen.
The children are not allowed to run in the corridor.
In traffic and security planning, 'Korridor' (corridor) is often used in fixed compounds. Especially common are 'der Luftkorridor' (air corridor) for airplanes and 'der Sicherheitskorridor' (safety corridor, or emergency lane) for emergency vehicles.
Bei einem Stau auf der Autobahn muss ein Korridor für die Rettungsdienste gebildet werden.
In a traffic jam on the highway, a corridor must be formed for the emergency services.
hallway / course / gear
Gang and Korridor can both refer to a long connecting space in a building. Gang is the general, everyday term. Korridor often sounds more formal and emphasizes a clearly defined, longer passage.

Der Gebäudeplan zeigt einen langen Korridor vor Raum 12.
The building plan shows a long corridor outside Room 12.
Wir treffen uns nach der Pause auf dem Gang vor Raum 12.
We’ll meet in the hallway outside Room 12 after the break.