| Similarity | Rank | |
|---|---|---|
| shales | 0.870 | 97010 |
| Shale | 0.870 | 29866 |
| oilsands | 0.802 | 96475 |
| coal | 0.795 | 5233 |
| Bakken | 0.787 | 53247 |
| hydrocarbon | 0.779 | 36213 |
| drilling | 0.778 | 8037 |
| fracking | 0.776 | 21463 |
| fracturing | 0.766 | 29911 |
| Marcellus | 0.757 | 34448 |
| drillers | 0.747 | 78745 |
| potash | 0.746 | 52060 |
| oilfields | 0.745 | 98378 |
| petroleum | 0.737 | 13215 |
| uranium | 0.736 | 14132 |
| sedimentary | 0.733 | 47805 |
| ethane | 0.733 | 97441 |
| mining | 0.733 | 4846 |
| methane | 0.729 | 19799 |
| Permian | 0.721 | 68603 |
| hydrocarbons | 0.720 | 32458 |
| sands | 0.715 | 15555 |
| aquifers | 0.715 | 48296 |
| bauxite | 0.708 | 69989 |
| tailings | 0.706 | 49890 |