| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| largest terrorist attacks in us history | 1.4 | 0.6 | 2254 | 39 |
| most deadly terrorist attacks in us history | 0.19 | 0.6 | 8114 | 19 |
| biggest terrorist attacks in history | 1.16 | 0.7 | 5318 | 95 |
| deadliest terrorist attacks in us history | 0.01 | 0.2 | 9803 | 56 |
| worst terrorist attacks in us history | 0.77 | 0.2 | 4726 | 25 |
| largest terrorist attack in history | 0.09 | 0.5 | 9125 | 51 |
| terrorist attacks in us history | 0.9 | 1 | 8855 | 81 |
| largest terror attacks in history | 0.5 | 0.5 | 7281 | 98 |
| largest domestic terrorist attack us | 0.08 | 0.4 | 7454 | 79 |
| famous terrorist attacks in the us | 0.14 | 0.3 | 8459 | 83 |
| biggest domestic terrorist attack in usa | 2 | 0.7 | 9762 | 61 |
| deadliest terrorist attack in us | 0.99 | 0.1 | 8550 | 71 |
| first terrorist attack in us | 1.53 | 0.6 | 88 | 36 |
| terrorist attack in usa | 1.42 | 0.4 | 2336 | 69 |
| what was the biggest terrorist attack | 0.19 | 0.4 | 8109 | 74 |
| terrorist attack in united states | 1.25 | 0.9 | 2224 | 53 |
