探検隊

1. Origins, structure, and basic meaning

• Structure: 探検隊 (たんけんたい) is a compound noun for an organized group exploring an unknown or unfamiliar place.
• Basic usage: 探検隊は目印を残す makes a cave-exploration group the subject, while 子供たちは探検隊を結成した makes a play expedition the team children form.

2. Common pitfalls and similar expressions

• Field expedition and play group
  • 探検隊は performs actual exploratory action, whereas children who 探検隊を結成 create a play role in a park. The latter does not grant professional expedition status.