From Envirowiki

Profit is the money (or goods) made back over and above the cost of the original investment. Profit is generally a form of theft, in that the increase in wealth has been removed from the commons, the environment, or another individual, usually without their consent, or only with their uninformed consent.

Profit is usually only available to those with property with which to make an initial investment.

Capitalism's main goal is increased profit for the individual (even though this usually comes at a similar cost to another individual or species, or place). This is called the "profit motive".