| Similarity | Rank | |
|---|---|---|
| radionuclide | 0.754 | 60202 |
| neutron | 0.718 | 24797 |
| radioactivity | 0.684 | 39280 |
| plutonium | 0.680 | 35882 |
| proton | 0.676 | 20444 |
| gamma_ray | 0.669 | 77142 |
| thorium | 0.668 | 91969 |
| radioactive | 0.660 | 38124 |
| tritium | 0.660 | 90971 |
| trace_element | 0.651 | 82700 |
| uranium | 0.638 | 18705 |
| radioactive_material | 0.638 | 55020 |
| atom | 0.633 | 7438 |
| hydrogen_atom | 0.620 | 96670 |
| boron | 0.618 | 94693 |
| organic_compound | 0.617 | 62871 |
| geochemistry | 0.614 | 85136 |
| neutrino | 0.609 | 41916 |
| Uranium | 0.598 | 74440 |
| mass_spectrometry | 0.595 | 55628 |
| hydrogen | 0.593 | 10438 |
| electron | 0.591 | 9389 |
| cosmic_ray | 0.589 | 60042 |
| iodine | 0.587 | 45118 |
| spectroscopy | 0.582 | 29325 |