| NIAGARAFALLS | Waterfall on the border between the United States and Canada (7,5) |
| NIAGARA | --- Falls, waterfall on the border between the United States and Canada (7) |
| LAKESUPERIOR | Large body of water in the United States and Canada |
| IGUAZU | --- Falls, waterfall on the border between Brazil and Argentina (6) |
| IGUACU | --- Falls is a waterfall on the border between Brazil and Argentina (6) |
| COLDWAR | Post World War II struggle between the United States and the Soviet Union (4,3) |
| BARTLETT | Usual name for the Williams pear in the United States and Canada (8) |
| NORTHAMERICA | USA and Canada |
| ERIE | Lake that borders both the United States and Canada |
| HOEDOWN | Boisterous square dance of the United States and Canada (7) |
| RIOGRANDE | River which runs along the border between the USA and Mexico (3,6) |
| HOOVERDAM | Barrier in the Black Canyon of the Colorado River, on the border between the states of Nevada and Arizona (6,3) |
| NAFTA | Trilateral treaty formed in 1993 between the United States, Canada and Mexico |
| DETROIT | Largest city on the border between the U.S. and Canada |
| KASAI | Tributary of the Congo River that forms par of the border between the Democratic Republic of the Congo and Angola (5) |
| UBANGI | River that forms the border between the Central African Republic and the Democratic Republic of the Congo (6) |
| ULLSWATER | Second-largest lake in the Lake District, on the border between the historic counties of Cumberland and Westmorland (9) |
| VICTORIAFALLS | Waterfall on the Zambezi river at the Zambia/Zimbabwe border (8,5) |
| GRANDE | The Rio -- forms the border between the US and Mexico (6) |
| BUTTE | An isolated, steep-sided, flat-topped hill in the western United States and Canada |
