| Similarity | Rank | |
|---|---|---|
| hydrogen | 0.777 | 10438 |
| helium | 0.606 | 38634 |
| fuel_cell | 0.583 | 19021 |
| methane | 0.579 | 14641 |
| Nitrogen | 0.574 | 83613 |
| Natural_Gas | 0.574 | 51686 |
| liquid_fuel | 0.571 | 86707 |
| Biomass | 0.566 | 78430 |
| Clean_Energy | 0.557 | 64978 |
| Carbon | 0.556 | 26584 |
| Fuels | 0.553 | 93475 |
| Energy | 0.553 | 3952 |
| Uranium | 0.550 | 74440 |
| Renewable_Energy | 0.548 | 25699 |
| Biofuels | 0.544 | 85923 |
| Solar_Energy | 0.540 | 59383 |
| CO2 | 0.539 | 9699 |
| Co_2 | 0.535 | 19859 |
| thorium | 0.535 | 91969 |
| Renewables | 0.534 | 81235 |
| Renewable | 0.534 | 86181 |
| Gas | 0.533 | 14593 |
| Electric | 0.533 | 18724 |
| Graphene | 0.532 | 83688 |
| proton | 0.530 | 20444 |