| Similarity | Rank | |
|---|---|---|
| radioactivity | 0.826 | 14083 |
| dioxin | 0.781 | 17452 |
| intermediate-level | 0.779 | 62187 |
| fallout | 0.776 | 25718 |
| plutonium | 0.773 | 9684 |
| contamination | 0.772 | 7877 |
| uranium | 0.767 | 8868 |
| caesium | 0.766 | 37760 |
| radionuclide | 0.759 | 25560 |
| methane | 0.758 | 11786 |
| toxic | 0.754 | 5194 |
| polonium | 0.753 | 36755 |
| tritium | 0.752 | 26341 |
| beryllium | 0.751 | 52345 |
| landfill | 0.741 | 13169 |
| contaminant | 0.741 | 23773 |
| radio-active | 0.735 | 71832 |
| irradiated | 0.725 | 31355 |
| strontium | 0.720 | 49539 |
| pollutant | 0.720 | 10281 |
| caesium-137 | 0.719 | 59747 |
| pcb | 0.718 | 16503 |
| contaminate | 0.716 | 9590 |
| hexafluoride | 0.713 | 78594 |
| oxide | 0.713 | 7892 |