| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | hafnium | Western countries | Hafnium is known as a transition metal used in nuclear reactors and high-temperature alloys. | 1 |
| 2 | hafnium | Western countries | Hafnium is commonly used in nuclear reactors and as an alloying agent in the aerospace industry. | 1 |
| 3 | hafnium | Western countries | Hafnium is commonly used in nuclear reactors and high-temperature alloys. | 1 |