Answer:
In a communist economic system, there is common ownership of the means of production, while in a free enterprise economic system, there is private ownership of the means of production.
For example, under communism, the workers of a factory own the factory, while under a free enterprise economic system, the workers do not own the factory, the factory is owned by other people who benefit from the profits.
In a communist economic system, the economy is planned. Either a central or a local authority determines what to produce, for who, and how. In a free enterprise economic system, the economy is allowed to move freely, and all consumers and producers indirectly influence the direction of the economy through the forces of supply and demand.