| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | ground zero | USA | Associated with the September 11 attacks in New York City | 1 |
| 2 | ground zero | United States | Refers to the point on the earth's surface directly below, directly above, or at the depth at which an explosion occurs, especially a nuclear explosion | 1 |
| 3 | ground zero | United States | Commonly refers to the site of the 9/11 terrorist attacks in New York City. | 1 |
| 4 | ground zero | United States | Refers to the site of a major disaster, particularly known for the September 11 attacks in New York City. | 1 |