What compounds are called salts? how salts are similar in composition to bases and how do they differ from them?

Salts are complex chemical substances consisting of acidic residue atoms and metals, which are interconnected, as a rule, by ionic bonds. Bases are complex chemicals containing metal atoms and hydroxyl groups (OH). The similarity between bases and salts lies in the fact that both of these classes of chemicals necessarily contain atoms of some kind of metal. The difference lies in the fact that the bases include a hydroxyl group, and the salts include an acid residue.