共有

1. Origins, structure, and basic meaning

• Structure: 共有(きょうゆう) means jointly owning, using, or holding something.
• Basic usage: It is used for making materials or photographs available to other people.

2. Common pitfalls and similar expressions

• What is shared and with whom
  • In 資料を全員と共有した, を marks the shared materials and と marks the people they were shared with.
• A limited sharing group
  • 家族だけのアルバム means a family-only album, limiting who it is shared with.