What is the difference between hydrolysis and hydration?

Explanation

Hydrolysis is the interaction of `H^+ and OH^(-)` ions of water with the anion and cation of a salt respectively to form acid and base. For example
`underset("Salt")(Na_2 CO_3)(s) + 2H_2 O to underset("base")(2NaOH) + underset("Acid")(H_2 CO_3)`
Hydration is the interaction of water with the salts to forms coordinated or hydrated ions or hydrated salts.
`Na^(+)Cl^(-)(s) + nH_2 O to Na^(+) (H_2 O)_n + Cl^(-) (H_2 O)_(n)`
`Ni^(2+) + 6H_2 O(l) to [Ni (H_2 O)_6]^(2+) + (aq) `
`CuSO_4(s) + 5H_2O (l) to underset("Hydrated salt")(CuSO_4(s) . 5H_2 O)`