| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| observer definition physics | 1.94 | 0.6 | 467 | 79 | 27 |
| observer | 0.06 | 0.3 | 9986 | 19 | 8 |
| definition | 0.06 | 0.9 | 800 | 60 | 10 |
| physics | 1.13 | 0.1 | 6481 | 72 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| observer definition physics | 0.69 | 0.1 | 5768 | 29 |
