| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | plutonium 238 | Germany | Strict regulations and public concerns regarding nuclear materials restrict the use and transport of plutonium 238. | 1 |
| 2 | plutonium 238 | Germany | Strictly regulated and recognized as a highly dangerous material due to its radioactive properties | 1 |
| 3 | plutonium 239 | Germany | Associated with nuclear accidents and environmental hazards | 1 |
| 4 | plutonium 239 | Germany | Viewed with extreme caution due to association with nuclear disasters and weapons | 1 |
| 5 | plutonium 240 | Germany | Strictly regulated due to its potential use in nuclear weapons | 1 |