| Similarity | Rank | |
|---|---|---|
| isotope | 0.952 | 45212 |
| isotopic | 0.885 | 82383 |
| deuterium | 0.850 | 86208 |
| radioactivity | 0.849 | 42842 |
| strontium | 0.844 | 86420 |
| neutrons | 0.829 | 44331 |
| thorium | 0.826 | 70297 |
| radioactive | 0.826 | 15026 |
| cesium | 0.821 | 91358 |
| fluorine | 0.795 | 79157 |
| radium | 0.793 | 78644 |
| tritium | 0.791 | 73668 |
| neutron | 0.790 | 35660 |
| plutonium | 0.786 | 35604 |
| atoms | 0.784 | 14412 |
| fission | 0.766 | 39321 |
| protons | 0.762 | 41243 |
| boron | 0.757 | 57042 |
| neutrino | 0.754 | 70890 |
| beryllium | 0.749 | 85366 |
| tracers | 0.743 | 85676 |
| ionization | 0.742 | 60226 |
| gaseous | 0.741 | 42339 |
| PAHs | 0.740 | 93057 |
| ionizing | 0.739 | 62668 |