| Similarity | Rank | |
|---|---|---|
| hydrogen | 0.732 | 10438 |
| oxygen | 0.628 | 6930 |
| proton | 0.622 | 20444 |
| neutron | 0.615 | 24797 |
| Hydrogen | 0.606 | 61006 |
| hydrogen_atom | 0.603 | 96670 |
| methane | 0.596 | 14641 |
| liquid_water | 0.592 | 98009 |
| electron | 0.589 | 9389 |
| O_2 | 0.589 | 92339 |
| carbon_dioxide | 0.585 | 11994 |
| gas | 0.582 | 1663 |
| water_vapor | 0.580 | 40856 |
| isotope | 0.574 | 40195 |
| water_vapour | 0.562 | 85308 |
| propellant | 0.559 | 84378 |
| cosmic_ray | 0.555 | 60042 |
| our_atmosphere | 0.550 | 72416 |
| water_molecule | 0.550 | 62720 |
| tritium | 0.547 | 90971 |
| nitrogen | 0.543 | 11773 |
| ion | 0.537 | 12236 |
| Co_2 | 0.537 | 19859 |
| neutrino | 0.537 | 41916 |
| the_solar_wind | 0.536 | 80824 |