| Similarity | Rank | |
|---|---|---|
| security_issue | 0.817 | 19872 |
| security_threat | 0.747 | 47415 |
| security_concern | 0.737 | 37021 |
| security_risk | 0.725 | 53682 |
| security_challenge | 0.719 | 64605 |
| political_problem | 0.647 | 63987 |
| problem | 0.640 | 185 |
| these_problem | 0.615 | 12503 |
| such_problem | 0.601 | 41208 |
| security_breach | 0.584 | 70052 |
| economic_problem | 0.582 | 38699 |
| security | 0.577 | 651 |
| serious_problem | 0.574 | 48894 |
| security_measure | 0.574 | 29180 |
| terrorist_threat | 0.570 | 56862 |
| improve_security | 0.569 | 89990 |
| problem_relate_to | 0.560 | 33222 |
| current_problem | 0.553 | 54692 |
| this_problem | 0.552 | 4064 |
| major_problem | 0.552 | 34279 |
| technical_problem | 0.552 | 42808 |
| privacy_issue | 0.550 | 62834 |
| problem_face | 0.548 | 83674 |
| of_these_problem | 0.545 | 78749 |
| security_policy | 0.540 | 26340 |