| Similarity | Rank | |
|---|---|---|
| Biomass | 0.858 | 50798 |
| biogas | 0.857 | 44510 |
| gasification | 0.854 | 64900 |
| feedstocks | 0.849 | 76964 |
| biochar | 0.849 | 81934 |
| bioenergy | 0.849 | 65798 |
| feedstock | 0.848 | 46681 |
| cogeneration | 0.832 | 76666 |
| biofuel | 0.815 | 33305 |
| digester | 0.811 | 85063 |
| biofuels | 0.804 | 26111 |
| renewable | 0.803 | 6153 |
| gas-fired | 0.780 | 70372 |
| methane | 0.779 | 19799 |
| renewables | 0.764 | 27442 |
| coal-fired | 0.761 | 36383 |
| cellulosic | 0.757 | 66673 |
| nitrogen | 0.751 | 12237 |
| greenhouse | 0.749 | 8346 |
| geothermal | 0.745 | 21905 |
| algal | 0.744 | 56888 |
| fossil-fuel | 0.743 | 91442 |
| fuels | 0.740 | 9417 |
| biodiesel | 0.740 | 28801 |
| fertiliser | 0.725 | 43681 |