How to say "sharing" in Japanese

Choosing the right word
  • シェアCommon
    noun, suru verb, transitive verbCovers sharing on social media, as in posting or reposting content. It is also the everyday, casual word for sharing things like rides, rooms, or expenses in conversation.
  • 共有きょうゆうCommon
    noun, suru verb, transitive verbFor joint or co-ownership of property and rights, and for sharing something intangible such as a viewpoint, understanding, or goal. The shared thing is held or used in common, not divided up.
    ケンは兄あにと部屋へやを共有きょうゆうしている。↗
    Ken shared the room with his elder brother.
  • 分配ぶんぱいJLPT N1approx.Common
    noun, suru verb, transitive verbRefers to sharing in the sense of dividing something up and distributing the parts, such as splitting money, profits, or portions among people. It implies apportionment rather than joint holding.
    彼かれらは利益りえきを公平こうへいに分配ぶんぱいした。↗
    They allotted the profits fairly.
  • 共用きょうようCommon
    suru verb, transitive verb, no-adjectiveCovers sharing in the sense of common or communal use, where several people use the same thing, such as a facility or space. It is about use in common, not ownership or division.
    君きみが寝室しんしつを共用きょうようしていた女の子おんなのこはどうなったのだろう。↗
    What happened to the girl you were sharing the bedroom with?
  • nounA loanword covering sharing broadly, especially in the names of sharing services and business contexts. For everyday sentences, シェア or one of the native words is usually the more natural choice.

Use 「シェア」 for social-media sharing and casual everyday sharing, 共有 for shared ownership or sharing something like a viewpoint, 分配 for dividing and distributing, 共用 for communal use of facilities, and 「シェアリング」 as a loanword for sharing services.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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