Oblong and Rectilinear

Oblong adjective - Deviating from a square or circle or sphere by being elongated in one direction.

Rectilinear and oblong are semantically related. In some cases you can use "Rectilinear" instead an adjective "Oblong".

Rectilinear adjective - Characterized by a straight line or lines.

Oblong and rectilinear are semantically related. Sometimes you can use "Oblong" instead an adjective "Rectilinear".