| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| rats back then in history | 0.62 | 0.2 | 3994 | 90 |
| rats back then in culture and folklore | 0.69 | 1 | 9010 | 76 |
| rats back then and now | 0.3 | 1 | 5684 | 57 |
| rats back then in medieval times | 0.19 | 0.1 | 767 | 12 |
| rats back then in new york | 1.71 | 0.7 | 2368 | 21 |
| rats back then in london | 0.55 | 0.9 | 7408 | 71 |
| rats back then vs today | 0.49 | 0.8 | 1031 | 77 |
| rats back then in art and literature | 1.15 | 0.3 | 5716 | 66 |
| rats back then in science and research | 0.04 | 0.3 | 9968 | 8 |
| history of the rat | 0.93 | 0.4 | 9526 | 17 |
| when did rats exist | 1.02 | 0.7 | 2389 | 13 |
| rats keep coming back | 1.27 | 1 | 215 | 5 |
| how long have rats been around | 1.78 | 0.6 | 1745 | 42 |
| when were rats discovered | 1.28 | 0.5 | 3584 | 88 |
| when were rats invented | 0.57 | 0.5 | 3696 | 6 |
| how have rats evolved over time | 1.25 | 0.2 | 2507 | 23 |
| when did rats first appear | 0.17 | 0.4 | 1110 | 7 |
| how long have rats existed | 1.43 | 0.2 | 4086 | 26 |
| what years are the rats | 0.99 | 0.8 | 8987 | 34 |
| year oft the rat | 1.26 | 1 | 6038 | 53 |
