| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| amazon kindle unlimited free books and novels | 1.96 | 0.8 | 3271 | 30 |
| free historical novels kindle unlimited books | 1.07 | 0.2 | 2269 | 51 |
| historical novels free kindle books | 0.53 | 0.5 | 3768 | 97 |
| historical fiction kindle unlimited books | 1.86 | 0.5 | 1940 | 19 |
| kindle unlimited historical books | 0.41 | 0.6 | 2869 | 59 |
