Low-down and Low-set

Low-down adjective - Not following or in accordance with standards of honor and decency.

Low-set and low-down are semantically related. In some cases you can use "Low-set" instead an adjective phrase "Low-down".

Low-set adjective - Lower than average.

Low-down and low-set are semantically related. Sometimes you can use "Low-down" instead an adjective phrase "Low-set".