| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| best alien books fiction | 0.68 | 0.4 | 1414 | 13 | 24 |
| best | 1.61 | 0.1 | 5187 | 87 | 4 |
| alien | 0.24 | 1 | 5280 | 44 | 5 |
| books | 1.19 | 0.5 | 4833 | 83 | 5 |
| fiction | 0.83 | 0.2 | 5785 | 18 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| best alien books fiction | 0.16 | 0.8 | 6117 | 74 |
| best alien invasion science fiction books | 0.97 | 0.1 | 2295 | 93 |
| best alien books non fiction | 0.94 | 0.3 | 2295 | 86 |
| best alien science fiction books | 1.11 | 0.6 | 2880 | 60 |
| science fiction alien books | 1.71 | 0.7 | 7522 | 56 |
| best book on aliens | 1.5 | 0.4 | 9677 | 2 |
| alien science fiction novels | 0.25 | 0.9 | 9812 | 53 |
| alien books non fiction | 1.69 | 0.9 | 2450 | 70 |
| discover the best books on alien worlds | 1.44 | 0.2 | 9165 | 89 |
| best sci fi books about aliens | 0.81 | 0.3 | 6878 | 1 |
| best alien romance books | 1.11 | 0.3 | 6025 | 61 |
| best books on ancient aliens | 0.28 | 0.3 | 8016 | 44 |
| best alien attack books | 1.34 | 0.2 | 5100 | 64 |
| books on aliens non-fiction | 0.08 | 0.7 | 7044 | 8 |
| aliens books series books | 1.41 | 0.6 | 5479 | 27 |
| books written by aliens | 0.34 | 0.3 | 1258 | 44 |
| best sci-fi book series with aliens | 1.98 | 0.9 | 786 | 80 |
| best alien romance novels | 0.99 | 0.4 | 1021 | 15 |
| novel of the alien | 0.38 | 0.2 | 5409 | 27 |
| books about aliens nonfiction | 0.74 | 0.7 | 6022 | 36 |
