A corporation is a company or group of people authorized to act as a single entity (legally a person) and recognized as such in law. Early incorporated entities were established by charter (i.e. by an ad hoc act granted by a monarch or passed by a parliament or legislature). Most jurisdictions now allow the creation of new corporations through registration.
Corporations come in many different types but are usually divided by the law of the jurisdiction where they are chartered into two kinds: by whether they can issue or not, or by whether they make profit or not.
Where local law distinguishes corporations by ability to issue stock, corporations allowed to do so are referred to as "stock corporations", ownership of the corporation is through stock, and owners of stock are referred to as "stockholders" or "shareholders". Corporations not allowed to issue stock are referred to as "non-stock" corporations; those who are considered the owners of the corporation are those who have obtained membership in the corporation, and are referred to as a "member" of the corporation.
Corporations chartered in regions where they are distinguished by whether they are allowed to be for profit or not are referred to as "for profit" and "not-for-profit" corporations, respectively.
There is some overlap between stock/non-stock and for profit/not-for-profit in that not-for-profit corporations are always non-stock as well. A for profit corporation is almost always a stock corporation, but some for profit corporations may choose to be non-stock. To simplify the explanation, whenever "Stockholder" or "Shareholder" is used in the rest of this article to refer to a stock corporation, it is presumed to mean the same as "member" for a non-profit corporation or for profit, non-stock corporation.
Registered corporations have legal personality and are owned by shareholders whose liability is limited to their investment. Shareholders do not typically actively manage a corporation; shareholders instead elect or appoint a board of directors to control the corporation in a fiduciary capacity.