noun, noun, used as a prefix, noun or participle which takes 'suru', intransitive verb, noun which may take the genitive case particle 'no'
cooperation; collaboration; joint action
Working together toward a shared goal. Used for joint efforts, partnerships, and acting in unison. Can be used as a noun, suru-verb, or prefix.
両社は新製品の開発で共同している。
The two companies are cooperating on the development of a new product.
共同作業で部屋を掃除した。
We cleaned the room through joint effort.
noun, noun, used as a prefix, noun or participle which takes 'suru', intransitive verb, noun which may take the genitive case particle 'no'
shared; communal; common use
Only when written 共同
Refers to something owned, used, or managed by multiple people together. Often used in compounds like 共同住宅 (apartment building) or 共同購入 (group buying). Restricted to the 共同 spelling.
この庭は隣の家との共同スペースです。
This garden is a shared space with the neighboring house.
共同の冷蔵庫はきれいに使ってください。
Please keep the communal refrigerator clean.