1 Charge is of two types, mass is only of one kind
2 There are two types of forces (attraction and repulsion) between charges, but there is only one kind (attraction) between masses.
3 Charge is quantized, but quantization of mass is not established so far.
4 Charge has SI unit coulomb, the SI unit of mass is kg.
5 Charge is conserved, but mass alone is not conserved (Mass + Energy is conserved).
6 Charge cannot exist without a mass, but mass can exist without a net charge.