| tighten security | 50.36 | Security was tightened. | |||
| provide security | 46.21 | It must provide security. | |||
| step_up security | 32.78 | Security has been stepped up around town. | |||
| improve security | 27.19 | And will it actually help improve security? | |||
| sell security | 26.93 | Germania quickly started selling new securities. | |||
| increase security | 26.60 | Security was increased. | |||
| beef_up security | 20.21 | Security was beefed up. | |||
| buy security | 20.01 | People will buy more securities. | |||
| threaten security | 14.29 | Maybe you feel your security is threatened. | |||
| guarantee security | 13.82 | Hard work, but at least it guaranteed security. | |||
| maintain security | 13.17 | Police dogs were deployed to help maintain security. | |||
| ensure security | 13.03 | They need to ensure job security and continue production. | |||
| have security | 10.40 | We have security. | |||
| boost security | 9.28 | The other half would boost homeland security. | |||
| strengthen security | 8.29 | Security was strengthened at a local chemical plant. | |||
| endanger security | 7.97 | In fact, they may even endanger US security. | |||
| discuss security | 7.31 | Brahimi said security would be discussed. | |||
| enhance security | 6.58 | Swipe cards are used to enhance security. | |||
| say security | 6.19 | Salac said FAA security and the FBI joined in the search. | |||
| reinforce security | 5.46 | Security was reinforced after the attack. |