SimilarityRank
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