| Similarity | Rank | |
|---|---|---|
| isotopes | 0.952 | 45629 |
| isotopic | 0.932 | 82383 |
| deuterium | 0.846 | 86208 |
| strontium | 0.832 | 86420 |
| radioactivity | 0.829 | 42842 |
| thorium | 0.802 | 70297 |
| tritium | 0.798 | 73668 |
| neutron | 0.795 | 35660 |
| radioactive | 0.794 | 15026 |
| cesium | 0.794 | 91358 |
| spectroscopic | 0.779 | 83503 |
| neutrons | 0.776 | 44331 |
| neutrino | 0.775 | 70890 |
| geochemical | 0.770 | 80897 |
| plutonium | 0.765 | 35604 |
| fluorine | 0.765 | 79157 |
| spectroscopy | 0.762 | 40691 |
| NMR | 0.762 | 52359 |
| fractionation | 0.760 | 96426 |
| radium | 0.757 | 78644 |
| radiocarbon | 0.752 | 83689 |
| spectra | 0.746 | 34582 |
| boron | 0.738 | 57042 |
| ionization | 0.737 | 60226 |
| nitrogen | 0.735 | 12237 |