| trade barrier | 52.47 | He advocated the removal of trade barriers. | ||
| language barrier | 16.72 | Not the language barrier. | ||
| vapor barrier | 6.98 | This is the vapor barrier. | ||
| non-tariff barrier | 5.13 | These were then viewed as non-tariff barrier to trade. | ||
| police barrier | 4.15 | At the police barriers, the anger was palpable. | ||
| tariff barrier | 3.82 | Smaller countries can band together to reinstate tariff barriers. | ||
| security barrier | 3.03 | They crossed no security barrier. | ||
| color barrier | 2.37 | The color barrier in baseball was absolute. | ||
| tire barrier | 2.37 | His car disintigrated as it crashed backwards into a tire barrier. | ||
| safety barrier | 1.91 | Gaping holes loom behind safety barriers. | ||
| custom barrier | 1.78 | Customs barriers between Russia and Belarus fall this week. | ||
| import barrier | 1.65 | But many other steel products would be exempted from any import barriers. | ||
| gender barrier | 1.51 | Some individual researchers are already breaking the gender barrier. | ||
| protectionist barrier | 1.51 | The US approach aims at bulldozing through protectionist barriers to investment. | ||
| species barrier | 1.32 | The species barrier is gone. | ||
| market barrier | 1.18 | Such reforms include lowering market barriers. | ||
| crowd barrier | 1.12 | Crowd barriers ringed the Palais des Congress where the Front was meeting. | ||
| traffic barrier | 0.86 | Wham, I rebound into the traffic barrier. | ||
| class barrier | 0.79 | Even in death, class barriers were preserved. | ||
| pain barrier | 0.79 | We have no pain barrier. |