Border and Sideline

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

Sideline and border are semantically related in boundary topic. In some cases you can use "Sideline" instead a noun "Border".

Nearby Words: borderline, bordered, bordering, borderland, borderless

Sideline noun - A line that marks the side boundary of a playing field.

Border and sideline are semantically related in periphery topic. Sometimes you can use "Border" instead a noun "Sideline".

Nearby Words: side, sidelined, sidelining