区域

1. Origins, structure, and basic meaning

• Structure: The administrative or technical noun 区域 (くいき) denotes an area bounded for a particular purpose or rule.
• Basic usage: It can identify a restricted construction zone or a 調査区域 outlined on a map.

2. Common pitfalls and similar expressions

• A bounded zone
  • It suggests an area bounded for a purpose or rule rather than a broadly described region.