| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| free books on philosophy | 1.44 | 0.7 | 6760 | 26 | 24 |
| free | 0.36 | 0.3 | 9530 | 1 | 4 |
| books | 1.83 | 0.7 | 5203 | 33 | 5 |
| on | 1.83 | 0.6 | 661 | 2 | 2 |
| philosophy | 0.17 | 0.5 | 8878 | 86 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| free books on philosophy | 1.26 | 0.1 | 7398 | 93 |
