Middle-of-the-road and Middle ground

Middle-of-the-road adjective - Avoiding major social change or extreme political ideas.

Middle ground and middle-of-the-road are semantically related. In some cases you can use "Middle ground" instead a noun phrase "Middle-of-the-road".

Middle ground noun - A middle point between extremes.

Middle-of-the-road and middle ground are semantically related. Sometimes you can use "Middle-of-the-road" instead an adjective phrase "Middle ground".