| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | aurora borealis | Polar countries | The aurora borealis, commonly known as the northern lights, is a frequently visible natural light display in the night sky of polar countries. | 1 |
| 2 | water vapor | Polar countries | In Polar countries, water vapor is scarce and often condenses into snow or ice. | 1 |