| Similarity | Rank | |
|---|---|---|
| effluent | 0.816 | 11027 |
| sludge | 0.809 | 15255 |
| outfall | 0.802 | 28169 |
| sewer | 0.782 | 10047 |
| polluted | 0.760 | 13076 |
| toxic | 0.744 | 5194 |
| pollute | 0.743 | 9638 |
| pollutant | 0.739 | 10281 |
| tailings | 0.734 | 54074 |
| contaminated | 0.728 | 12063 |
| desalination | 0.724 | 43951 |
| sewerage | 0.723 | 19246 |
| watercourse | 0.721 | 22216 |
| landfill | 0.719 | 13169 |
| spillage | 0.714 | 19509 |
| incinerator | 0.712 | 14919 |
| waste | 0.708 | 1203 |
| incineration | 0.705 | 18636 |
| intermediate-level | 0.705 | 62187 |
| chlorinate | 0.702 | 31192 |
| groundwater | 0.701 | 12650 |
| dioxin | 0.699 | 17452 |
| slurry | 0.693 | 17073 |
| portrack | 0.688 | 76550 |
| eutrophication | 0.687 | 42648 |