die Diele
hallway
The entrance area or hall in a house or apartment, from which you can get to other rooms.
Häng deinen Mantel bitte in der Diele an die Garderobe.
Please hang your coat on the coat rack in the hallway.

hallway / floorboard
Loading your saved state.
hallway
The entrance area or hall in a house or apartment, from which you can get to other rooms.
Häng deinen Mantel bitte in der Diele an die Garderobe.
Please hang your coat on the coat rack in the hallway.

The meaning often depends on whether the word is used in the singular or plural. In the singular ('die Diele'), it usually means the hallway. In the plural ('die Dielen'), it almost always means the wooden boards used for the floor.
Die Schuhe stehen in der Diele.
The shoes are in the hallway.
In the meaning 'Flur' (hallway), the word is often combined with actions that are typical for an entrance area.
Er wartete in der Diele auf seine Frau.
He waited in the hallway for his wife.
When 'Diele' refers to a wooden board, it is often used in contexts of building or living spaces. Typical combinations describe the material or its condition.
Wir müssen die alten Dielen abschleifen und neu lackieren.
We have to sand down the old floorboards and varnish them again.
The meaning of a large room in a farmhouse is rare today. It is used mainly in historical or architectural texts.
Im Heimatmuseum kann man eine nachgebaute Diele eines alten Bauernhauses besichtigen.
At the local history museum, you can visit a reconstructed central hall of an old farmhouse.
hallway / course / gear
'der Gang' and 'die Diele' can both mean an area in a house or apartment that you pass through to get to other rooms. 'der Gang' is a general word for a long, narrow connecting space, also in schools, offices, or hospitals. 'die Diele' usually means the entrance area of an apartment or house. You can confuse the words when talking about the hallway at home. In practical terms: in large buildings, people are more likely to say 'Gang'; at home by the entrance, they often say 'Diele'.

In der Diele zog Mehmet die nassen Schuhe aus.
Mehmet took off his wet shoes in the hallway.
Im Krankenhaus warteten mehrere Patienten auf dem langen Gang.
In the hospital, several patients were waiting in the long corridor.