Common Mistakes :  Boundary

noun

.BAD: The country shares boundaries with Ruanda and Burundi

.GOOD: The country shares borders with Ruanda and Burundi

Use boundary when you are talking about an area of land within a country

.The Mississippi River forms a natural boundary between Tennessee and Arkansas

.Their farm is just inside the boundary of the National Park

The place where two countries meet is the border

.We’re about to cross the border between Austria and Switzerland