| Similarity | Rank | |
|---|---|---|
| Fuel | 0.720 | 49349 |
| Biofuels | 0.684 | 85923 |
| Biomass | 0.657 | 78430 |
| Bioenergy | 0.621 | 86779 |
| Natural_Gas | 0.619 | 51686 |
| Clean_Energy | 0.608 | 64978 |
| Renewable_Energy | 0.607 | 25699 |
| Renewables | 0.602 | 81235 |
| fuel | 0.594 | 1779 |
| Energy | 0.581 | 3952 |
| liquid_fuel | 0.573 | 86707 |
| Vehicles | 0.567 | 47234 |
| Energy_Policy | 0.566 | 84594 |
| renewable_fuel | 0.566 | 88540 |
| Renewable | 0.565 | 86181 |
| Gas | 0.565 | 14593 |
| Engines | 0.560 | 87658 |
| alternative_fuel | 0.558 | 38448 |
| Oil | 0.556 | 11941 |
| Coal | 0.554 | 37426 |
| Hydrogen | 0.553 | 61006 |
| Chemical | 0.552 | 20056 |
| biodiesel | 0.544 | 34972 |
| biofuel | 0.543 | 11346 |
| Chemicals | 0.528 | 52863 |