| Similarity | Rank | |
|---|---|---|
| photovoltaic | 0.691 | 22415 |
| solar | 0.676 | 2460 |
| Photovoltaic | 0.662 | 65567 |
| voltaic | 0.651 | 57929 |
| PV | 0.641 | 14682 |
| ac | 0.631 | 25270 |
| photovoltaics | 0.621 | 66103 |
| inverter | 0.604 | 27906 |
| kw | 0.595 | 82706 |
| SunPower | 0.590 | 93594 |
| lcd | 0.566 | 60039 |
| inverters | 0.561 | 49071 |
| rf | 0.559 | 93552 |
| heating | 0.556 | 4216 |
| Solar | 0.550 | 7195 |
| bulb | 0.550 | 11253 |
| cogeneration | 0.548 | 76666 |
| biomass | 0.542 | 16091 |
| renewable | 0.540 | 6153 |
| hvac | 0.535 | 65645 |
| electricity | 0.535 | 3160 |
| kwh | 0.532 | 97384 |
| uv | 0.531 | 70374 |
| thin-film | 0.531 | 77599 |
| energy-saving | 0.529 | 35516 |