A company is defined as an artificial legal person created under the Companies Act. It has key characteristics such as being an incorporated association, having a separate legal entity from its members, and having perpetual existence. The main types of companies are chartered, statutory, and registered companies. Registered companies are further divided into companies limited by shares, which have share capital and limited member liability, and companies limited by guarantee, which may or may not have share capital but members promise to pay a fixed amount in the event of liquidation. A company is distinct from a partnership in that it has a perpetual life, transferable shares, and limited member liability, among other differences.