By Charles 
You can use two different side tables on either end of a sofa, as long as they share enough visual connection to look intentional. Matching tables are not required, and mixed side tables can make a living room feel more collected and less showroom-like.
The easiest way to mix them is to keep one element consistent. That could be height, color, material, leg style, shape, or visual weight. For example, a round wood table on one side can pair with a square table on the other if both have warm wood tones or similar heights. A sculptural table can balance a storage table if the scale feels similar from across the room.
Height is the practical constraint. Both tables should still work with the sofa arms. If one table is much taller, it may look awkward or make a lamp sit too high. If one is much shorter, it may feel like a stool rather than a usable side table.
Function can differ. One side may need drawers for remotes and chargers, while the other only needs a surface for a lamp or drink. This is often more useful than perfect symmetry.
For POVISON, use the side tables collection to compare materials, heights, and silhouettes that can coordinate without being identical.
