| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| underground railroad book free | 1.28 | 0.9 | 8874 | 64 | 30 |
| underground | 0.66 | 0.4 | 6837 | 17 | 11 |
| railroad | 1.2 | 0.2 | 532 | 55 | 8 |
| book | 1.33 | 0.6 | 8828 | 58 | 4 |
| free | 0.48 | 0.2 | 5337 | 91 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| underground railroad book free | 0.27 | 0.4 | 79 | 30 |
