| Similarity | Rank | |
|---|---|---|
| sewage | 0.816 | 6966 |
| chlorinate | 0.758 | 31192 |
| leachate | 0.757 | 84487 |
| sludge | 0.747 | 15255 |
| pollutant | 0.744 | 10281 |
| outfall | 0.737 | 28169 |
| flocculation | 0.735 | 62174 |
| tapwater | 0.734 | 27084 |
| toxic | 0.733 | 5194 |
| contaminant | 0.731 | 23773 |
| slurry | 0.731 | 17073 |
| phenol | 0.728 | 28644 |
| potable | 0.726 | 45953 |
| nitrate | 0.724 | 7756 |
| nitrite | 0.722 | 23744 |
| organochlorine | 0.718 | 48475 |
| polychlorinate | 0.714 | 45744 |
| anaerobic | 0.713 | 19094 |
| biphenyl | 0.711 | 49287 |
| lindane | 0.711 | 67136 |
| odorous | 0.709 | 32965 |
| syn-gas | 0.707 | 49075 |
| phosphoric | 0.706 | 73402 |
| spillage | 0.706 | 19509 |
| bioga | 0.706 | 50706 |