| Similarity | Rank | |
|---|---|---|
| protons | 0.933 | 41243 |
| atoms | 0.904 | 14412 |
| neutron | 0.903 | 35660 |
| electrons | 0.891 | 17880 |
| deuterium | 0.876 | 86208 |
| neutrinos | 0.868 | 66418 |
| photons | 0.863 | 31946 |
| antimatter | 0.854 | 64679 |
| quarks | 0.844 | 65913 |
| neutrino | 0.841 | 70890 |
| isotopes | 0.829 | 45629 |
| nuclei | 0.826 | 34182 |
| electron | 0.825 | 16811 |
| photon | 0.822 | 33504 |
| fission | 0.814 | 39321 |
| particles | 0.804 | 7018 |
| molecules | 0.802 | 9399 |
| subatomic | 0.802 | 64342 |
| particle | 0.795 | 12203 |
| atom | 0.795 | 16976 |
| quasars | 0.791 | 93060 |
| ions | 0.783 | 19599 |
| helium | 0.777 | 31291 |
| isotope | 0.776 | 45212 |
| gravitational | 0.772 | 22967 |