| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| how long have there been wars | 0.78 | 0.7 | 1673 | 33 |
| how many wars have there been historically | 0.21 | 0.3 | 1357 | 45 |
| how many wars have there ever been | 1.51 | 0.7 | 6498 | 26 |
| how many wars have occurred | 1.78 | 0.5 | 1778 | 82 |
| how many wars have ever happened | 1.64 | 0.4 | 5748 | 88 |
| how many wars were there in history | 1.3 | 0.4 | 9099 | 10 |
| how many wars have happened in history | 0.34 | 0.7 | 9902 | 69 |
| how long has war been around | 0.41 | 1 | 4545 | 74 |
| how long has war existed | 1.97 | 1 | 5360 | 62 |
| how many years were these wars fought | 1.49 | 0.1 | 3602 | 91 |
| how many wars happen each year | 1.6 | 0.3 | 3344 | 50 |
| number of wars in history | 1.59 | 0.2 | 5639 | 62 |
| number of wars by year | 0.83 | 0.5 | 5287 | 85 |
