共きょう同どう

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.

• 両りょう社しゃは新しん製せい品ひんの開かい発はつで共きょう同どうしている。

  The two companies are cooperating on the development of a new product.

• 共きょう同どう作さ業ぎょうで部屋へやを掃そう除じした。

  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.

• この庭にわは隣となりの家いえとの共きょう同どうスペースです。

  This garden is a shared space with the neighboring house.

• 共きょう同どうの冷れい蔵ぞう庫こはきれいに使つかってください。

  Please keep the communal refrigerator clean.