You did not provide any answer choices so here are some things they have in common:
They are both planets orbiting the Sun.
They both have gravity and a magnetic field, and both spin (rotate),
although for Saturn the rotation of its atmosphere varies in speed.
They have at least one natural satellite (Earth has one, Saturn more than 60). They both have atmospheres and both have water, in Saturn's case the ice frozen in its rings.
Hope this helps!
-Payshence xoxo