| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | radish | Japan | Commonly pickled and served as a side dish with meals | 1 |
| 2 | radon | Japan | Radon is not a commonly discussed issue, and testing for radon is not a widespread practice. | 1 |
| 3 | radon | Japan | Radon is not widely recognized as a significant indoor air quality concern, and testing for radon levels in homes is not common. | 1 |