| Similarity | Rank | |
|---|---|---|
| deuterium | 0.727 | 86208 |
| Hydrogen | 0.725 | 29099 |
| antimatter | 0.682 | 64679 |
| Neutron | 0.662 | 87888 |
| Radioactive | 0.651 | 64607 |
| Centauri | 0.642 | 51108 |
| neutrons | 0.640 | 44331 |
| Grenade | 0.634 | 62675 |
| neutron | 0.632 | 35660 |
| helium | 0.630 | 31291 |
| Luthor | 0.628 | 56134 |
| Reactor | 0.627 | 56571 |
| McKAY | 0.627 | 92924 |
| fission | 0.624 | 39321 |
| Helium | 0.622 | 44011 |
| Martian | 0.619 | 25462 |
| Sludge | 0.617 | 98368 |
| Krypton | 0.616 | 71924 |
| isotopes | 0.615 | 45629 |
| Uranium | 0.613 | 45052 |
| Slime | 0.612 | 90439 |
| tritium | 0.612 | 73668 |
| plutonium | 0.612 | 35604 |
| Methane | 0.611 | 69623 |
| gaseous | 0.609 | 42339 |