| Similarity | Rank | |
|---|---|---|
| biofuel | 0.904 | 33305 |
| ethanol | 0.871 | 14555 |
| Biodiesel | 0.865 | 63631 |
| biofuels | 0.855 | 26111 |
| E85 | 0.854 | 75418 |
| feedstocks | 0.812 | 76964 |
| feedstock | 0.810 | 46681 |
| cellulosic | 0.806 | 66673 |
| fuel | 0.798 | 1992 |
| diesel | 0.792 | 8085 |
| fuels | 0.791 | 9417 |
| gasoline | 0.788 | 8864 |
| CNG | 0.787 | 43143 |
| petroleum-based | 0.781 | 79740 |
| Ethanol | 0.769 | 51076 |
| methanol | 0.763 | 42034 |
| biogas | 0.757 | 44510 |
| Biofuels | 0.752 | 67613 |
| renewable | 0.751 | 6153 |
| biomass | 0.740 | 16091 |
| LPG | 0.736 | 42074 |
| cogeneration | 0.733 | 76666 |
| gasification | 0.733 | 64900 |
| petroleum | 0.725 | 13215 |
| fossil-fuel | 0.721 | 91442 |