The border between the two countries is heavily guarded.

A line that separates two areas, such as countries or regions.
They crossed the border to visit the neighboring country.
The border was marked by a tall fence.
Many people live near the border of the two states.
border control
border crossing
border dispute
boundary
frontier
division
The border between the two countries is heavily monitored.

A line that separates two areas, often used in the context of countries or regions.
Travelers must show their passports at the border.
The border was closed due to security concerns.
We drove along the border for several miles.
border control
border crossing
border security
boundary
frontier
division
The country has a long border with its neighbor.

A line that separates two political or geographical areas.
They patrol the border to prevent illegal crossings.
The border was closed due to security concerns.
Many people live near the border between the two states.
border control
border security
border dispute
boundary
frontier
division
The border between the two countries is heavily guarded.

A line that separates two areas or regions.
We crossed the border to visit our friends.
The river forms a natural border between the states.
There is a fence along the border to keep animals out.
national border
border control
border line
boundary
edge
frontier
The river forms the border between the two countries.

The line that separates two areas, such as countries or regions.
The fence marks the border of the property.
They crossed the border into a new state.
The map shows the border between the two regions.
international border
border control
border dispute
boundary
frontier
division