| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| free books about space | 0.25 | 0.9 | 1039 | 53 | 22 |
| free | 0.97 | 1 | 7429 | 53 | 4 |
| books | 0.06 | 0.7 | 7916 | 39 | 5 |
| about | 0.29 | 1 | 5076 | 61 | 5 |
| space | 1.99 | 0.2 | 4750 | 86 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| free books about space | 1.82 | 0.5 | 1214 | 87 |
| free kindle space opera books | 1.6 | 1 | 5181 | 91 |
| kindle free books space adventure | 1.31 | 0.6 | 7186 | 88 |
| free audio books about space | 2 | 1 | 9014 | 91 |
| space books for kids free | 1.11 | 0.8 | 7882 | 28 |
| great books about space | 1.29 | 0.5 | 3067 | 48 |
| online space free books | 1.63 | 0.8 | 7927 | 13 |
| books for kids about space | 0.74 | 0.2 | 715 | 67 |
| best books about space | 1.83 | 0.9 | 7995 | 62 |
| space books free download | 0.22 | 0.2 | 7589 | 31 |
| children books about space | 0.29 | 0.4 | 3999 | 63 |
| books related to space | 0.07 | 0.7 | 8119 | 95 |
| fiction books about space | 0.47 | 0.1 | 525 | 75 |
| things about space book | 1.48 | 0.5 | 7998 | 69 |
| space related books for kids | 1.68 | 0.4 | 7369 | 3 |
| books based on space | 0.3 | 0.9 | 6515 | 75 |
