Flat and Walk-up apartment

Flat noun - A room or set of rooms in a private house or a block used as a separate dwelling place.

Walk-up apartment and flat are semantically related. In some cases you can replace phrase "Walk-up apartment" with "Flat", this terms are similar.

Nearby Words: flatter, flatly, flatness, flatlet, flatting

Walk-up apartment noun - An apartment in a building without an elevator.

Flat and walk-up apartment are semantically related. You can use "Flat" instead a noun phrase "Walk-up apartment".