| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| ground to air defense systems | 0.79 | 1 | 2011 | 93 |
| ground to air missile defense system | 1.64 | 1 | 7360 | 95 |
| ground based air defense | 1.45 | 0.9 | 3284 | 30 |
| ground based air defence | 1.77 | 0.8 | 7324 | 51 |
| air base ground defense | 0.64 | 0.6 | 6227 | 25 |
| army ground based air defence system | 1.51 | 0.8 | 6411 | 23 |
| air force air base ground defense | 0.8 | 0.5 | 6759 | 67 |
| army air ground system | 0.09 | 0.1 | 9526 | 80 |
| ground based air defense usmc | 0.24 | 0.8 | 5102 | 6 |
| us air defense systems | 2 | 0.4 | 114 | 53 |
| ground to air weapons | 0.47 | 0.2 | 2406 | 94 |
| land based air defense systems | 0.51 | 0.5 | 8150 | 88 |
| air to ground operations | 1.41 | 0.5 | 5356 | 92 |
| air to ground communication system | 1.33 | 0.2 | 9300 | 49 |
| how do modern air defense systems work | 0.48 | 0.2 | 3769 | 27 |
| united states air defense systems | 0.61 | 0.7 | 2154 | 5 |
| usa air defense system | 1.82 | 0.3 | 7295 | 9 |
| canada ground based air defence | 1.86 | 1 | 3380 | 45 |
| air base ground defense school | 1.98 | 0.7 | 6036 | 66 |
| us air defence system | 1.83 | 0.7 | 207 | 25 |
| air defence gun system | 0.26 | 0.7 | 5701 | 71 |
