| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| earth impact database | 0.52 | 0.2 | 4326 | 94 | 21 |
| earth | 1.36 | 0.8 | 8196 | 74 | 5 |
| impact | 0.61 | 0.5 | 361 | 99 | 6 |
| database | 1.82 | 0.3 | 8752 | 15 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| earth impact database | 0.93 | 0.8 | 8381 | 97 |
| earth impact crater database | 0.72 | 1 | 9514 | 61 |
| earth impact crater map | 0.58 | 0.3 | 2688 | 60 |
| impact crater on earth | 1.57 | 0.4 | 7834 | 61 |
| impact craters on earth map | 0.48 | 0.9 | 786 | 60 |
| crater impact sites on earth | 1.04 | 1 | 2221 | 50 |
| impact crater map of the world | 1.58 | 0.9 | 9103 | 75 |
| most recent impact crater on earth | 1.72 | 0.1 | 9590 | 98 |
| list of impact craters on earth | 0.85 | 0.8 | 4070 | 100 |
| the largest verified impact crater on earth | 0.93 | 0.3 | 8243 | 22 |
| large impact craters on earth | 0.17 | 0.5 | 9100 | 64 |
| visible impact craters on earth | 1.19 | 0.4 | 3882 | 37 |
| the largest impact crater on earth | 0.14 | 1 | 7011 | 88 |
| a new lunar impact crater database | 1.66 | 0.4 | 8839 | 72 |
| biggest impact crater on earth | 1.3 | 0.9 | 1808 | 34 |
