| Similarity | Rank | |
|---|---|---|
| neutron | 0.815 | 35660 |
| neutrons | 0.814 | 44331 |
| thermonuclear | 0.804 | 76089 |
| deuterium | 0.801 | 86208 |
| antimatter | 0.790 | 64679 |
| thorium | 0.789 | 70297 |
| plutonium | 0.784 | 35604 |
| isotopes | 0.766 | 45629 |
| atomic | 0.758 | 12781 |
| neutrino | 0.755 | 70890 |
| radioactivity | 0.748 | 42842 |
| fissile | 0.746 | 84273 |
| isotope | 0.732 | 45212 |
| reactor | 0.725 | 16143 |
| protons | 0.722 | 41243 |
| atoms | 0.717 | 14412 |
| radioactive | 0.716 | 15026 |
| nuclear | 0.716 | 2735 |
| hydrogen | 0.713 | 9917 |
| ionization | 0.711 | 60226 |
| neutrinos | 0.710 | 66418 |
| gaseous | 0.710 | 42339 |
| electron | 0.695 | 16811 |
| helium | 0.694 | 31291 |
| nuclei | 0.694 | 34182 |