Berm and Perimeter

Berm noun - A narrow ledge or shelf typically at the top or bottom of a slope.

Perimeter and berm are semantically related. in border topic. In some cases you can use "Perimeter" instead a noun "Berm".

Perimeter noun - The line or relatively narrow space that marks the outer limit of something.

Berm and perimeter are semantically related. Sometimes you can use "Berm" instead a noun "Perimeter".