The soil on the earth is loose and soft sediment, which has not solidified into rocks. Mainly the product of Quaternary. The fundamental difference between soil and rock is that soil has no rigid connection, its physical state is changeable and its mechanical strength is low. The meaning of soil on other planets is roughly similar to that of earth.

But Saturn is a gas planet with gas and liquid hydrogen and helium on its surface, so there is no soil on Saturn.