| Similarity | Rank | |
|---|---|---|
| solar | 0.812 | 2460 |
| photovoltaic | 0.769 | 22415 |
| Photovoltaic | 0.753 | 65567 |
| Solar | 0.709 | 7195 |
| photovoltaics | 0.704 | 66103 |
| sun's | 0.696 | 20816 |
| PV | 0.663 | 14682 |
| lumination | 0.663 | 77847 |
| pv | 0.651 | 76466 |
| sunrays | 0.637 | 87694 |
| light-emitting | 0.636 | 81527 |
| thin-film | 0.635 | 77599 |
| incandescent | 0.633 | 24018 |
| bulbs | 0.631 | 9495 |
| solar-powered | 0.628 | 50900 |
| inverter | 0.628 | 27906 |
| electricity | 0.628 | 3160 |
| halogen | 0.627 | 35812 |
| fluorescents | 0.626 | 88488 |
| bulb | 0.624 | 11253 |
| heaters | 0.621 | 15430 |
| ultra-violet | 0.620 | 90146 |
| geothermal | 0.619 | 21905 |
| photoelectric | 0.617 | 95795 |
| LED | 0.615 | 5610 |