Midway and So-so

Midway adjective - Equally distant from the extremes.

So-so and midway are semantically related. In some cases you can use "So-so" instead an adjective "Midway".

So-so adjective - Of average to below average quality.

Midway and so-so are semantically related. Sometimes you can use "Midway" instead an adjective phrase "So-so".