| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| biggest terrorist attacks in us history | 0.32 | 0.2 | 8925 | 90 |
| most deadly terrorist attacks in us history | 0.94 | 0.5 | 1839 | 4 |
| terrorist attacks in us history | 1.51 | 1 | 3422 | 8 |
| worst terrorist attacks in us history | 1.02 | 0.8 | 2233 | 8 |
| deadliest terrorist attacks in us history | 1.89 | 0.2 | 6687 | 92 |
| largest terrorist attacks in history | 1.2 | 0.3 | 4248 | 21 |
| the biggest terrorist attack in history | 1.45 | 1 | 5950 | 81 |
| famous terrorist attacks in the us | 0.14 | 0.9 | 4348 | 89 |
| major terrorist attacks in the us | 0.77 | 0.7 | 9943 | 8 |
| biggest domestic terrorist attack in usa | 1.98 | 0.8 | 9233 | 83 |
| largest terror attacks in history | 1.78 | 0.3 | 9557 | 30 |
| top terrorist attacks in america | 1.5 | 0.6 | 5252 | 51 |
| what was the biggest terrorist attack | 1.58 | 0.9 | 2276 | 55 |
| largest domestic terrorist attack us | 0.21 | 1 | 2941 | 9 |
| terrorist attack in usa | 0.2 | 0.2 | 6138 | 81 |
| terrorist attack in united states | 0.51 | 0.9 | 6301 | 40 |
