| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | americium | United States | Used in smoke detectors for fire safety | 1 |
| 2 | americium | United States | Used in smoke detectors for fire safety purposes | 1 |
| 3 | americium | United States | Used in smoke detectors for home safety | 1 |
| 4 | americium 241 | United States | Used in household smoke detectors for radiation detection | 1 |
| 5 | americium 241 | United States | Used in smoke detectors for fire safety | 1 |
| 6 | americium 241 | United States | Used in smoke detectors for household safety | 1 |