| Similarity | Rank | |
|---|---|---|
| biofuel | 0.829 | 11346 |
| biodiesel | 0.805 | 34972 |
| alternative_fuel | 0.797 | 38448 |
| feedstock | 0.703 | 44952 |
| bioga | 0.698 | 33090 |
| liquid_fuel | 0.695 | 86707 |
| natural_gas | 0.695 | 5419 |
| renewable_energy_source | 0.690 | 24016 |
| ethanol | 0.687 | 13692 |
| bioenergy | 0.686 | 43864 |
| renewable_energy | 0.676 | 4106 |
| fossil_fuel | 0.675 | 9239 |
| alternative_energy_source | 0.675 | 77620 |
| alternative_energy | 0.674 | 32265 |
| clean_energy | 0.672 | 14373 |
| renewable_source | 0.669 | 75160 |
| biomass | 0.666 | 8352 |
| renewable_resource | 0.665 | 46913 |
| diesel_fuel | 0.664 | 48281 |
| Biofuels | 0.663 | 85923 |
| renewable | 0.661 | 7265 |
| of_fossil_fuel | 0.653 | 44531 |
| renewable_power | 0.647 | 86212 |
| hydrogen | 0.633 | 10438 |
| renewable_energy_resource | 0.633 | 83922 |