秘匿

1. Origins, structure, and basic meaning

• Structure: 秘匿(ひとく) means concealing information so that others do not learn it.
• Basic usage: It is a formal way to describe concealing personal information or important records.

2. Common pitfalls and similar expressions

• A secret versus concealing it
  • 秘密(ひみつ) can refer to undisclosed information or the state of being secret. 秘匿する focuses on the act of keeping such information hidden.