| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| greatest space opera novels | 0.86 | 0.2 | 7881 | 73 | 27 |
| greatest | 1.59 | 0.7 | 5992 | 78 | 8 |
| space | 0.62 | 0.2 | 3754 | 12 | 5 |
| opera | 0.9 | 1 | 9537 | 30 | 5 |
| novels | 1.7 | 0.9 | 74 | 8 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| greatest space opera novels | 0.73 | 0.8 | 14 | 50 |
| greatest space opera science fiction novels | 0.46 | 0.7 | 6859 | 80 |
| best space opera book series | 1.46 | 0.3 | 6401 | 66 |
| best rated space opera books | 0.55 | 0.4 | 4427 | 56 |
| best space opera series books | 1.85 | 0.2 | 9350 | 32 |
| great space opera books | 1 | 0.6 | 7542 | 93 |
| good space opera books | 1.25 | 0.4 | 1718 | 72 |
| the very best published space opera | 1.85 | 0.6 | 6238 | 10 |
| top space opera book series | 0.69 | 0.1 | 9476 | 2 |
| best space opera series | 1.23 | 0.1 | 991 | 4 |
| best new space opera books | 1.7 | 0.3 | 1916 | 60 |
| best selling space opera books | 0.19 | 0.1 | 8214 | 25 |
| recent space opera books | 0.3 | 1 | 2129 | 79 |
| good modern space opera books | 1.09 | 0.8 | 9554 | 43 |
| top rated space opera | 0.95 | 0.6 | 8991 | 49 |
| best space opera audio books | 1.13 | 0.4 | 9731 | 7 |
