SimilarityRank
pollution 0.831 2289
toxic 0.811 5194
sulphur 0.801 6647
emission 0.792 3620
nox 0.784 28969
chlorine 0.780 10537
dioxide 0.778 4762
methane 0.773 11786
dioxin 0.772 17452
contaminant 0.769 23773
monoxide 0.769 12904
halon 0.769 27495
lindane 0.765 67136
nitrogen 0.764 6386
groundwater 0.760 12650
particulate 0.756 25930
pollute 0.756 9638
nitrate 0.755 7756
smog 0.755 16818
tetrachloride 0.754 38419
contamination 0.752 7877
chlorinate 0.752 31192
hydrocarbon 0.751 12320
carcinogen 0.751 23531
hcfc 0.747 89263