| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| the respiratory system pdf | 2 | 0.4 | 6067 | 69 | 26 |
| the | 0.01 | 0.3 | 4083 | 46 | 3 |
| respiratory | 1.73 | 1 | 1937 | 33 | 11 |
| system | 0.83 | 0.8 | 1569 | 6 | 6 |
| 0.46 | 0.2 | 6061 | 9 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| the respiratory system pdf | 0.88 | 0.2 | 9566 | 73 |
