緊密

1. Origins, structure, and basic meaning

• Structure: 緊密(きんみつ) describes a close connection or closely coordinated cooperation.
• Basic usage: It describes two companies working closely together on a new product.
  • 両社は新製品の開発で緊密に連携している。

2. Common pitfalls and similar expressions

• Close coordination and personal closeness
  • 親密(しんみつ) readily describes emotional closeness between people. 緊密 suits emphasis on closely coordinated cooperation or communication, as in 緊密な連携.