Treppenraum

The German word "Treppenraum" is a compound noun made up of:

• Treppe — meaning "stair" or "stairs"
• Raum — meaning "room" or "space"

"Treppenraum" refers to the stairwell or stairway space in a building, the area where the stairs are located.

Similar words include:

• Treppenhaus — staircase or stairwell, often referring to the entire stairwell including landings and corridors
• Stiegenhaus (Austrian German) — similar to Treppenhaus, stairwell

Difference:

• Treppenraum emphasizes the spatial area of the stairs themselves.
• Treppenhaus usually refers to the entire stairwell including landings, corridors, sometimes elevator shafts — a more general term for the stairwell area in a building.