noun
common area; common element
Refers to shared spaces or facilities in a condominium, apartment building, or other multi-unit property, such as hallways, entrances, and elevators.
マンションの共用部分の掃除は管理組合が行います。
The cleaning of the condominium's common areas is done by the management association.
共用部分での騒音は控えてください。
Please refrain from making noise in the common areas.
Refers to the privately owned or exclusively used part of a building, in contrast to 共用部分 which is shared.
Compound of 共用 (shared use) and 部分 (part, section).