| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| observer definition physics | 1.29 | 0.7 | 8496 | 81 | 27 |
| observer | 1.22 | 0.6 | 3583 | 4 | 8 |
| definition | 1.83 | 0.9 | 6822 | 50 | 10 |
| physics | 0.29 | 0.8 | 5294 | 9 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| observer definition physics | 1.21 | 0.4 | 9623 | 70 |
