We may find that there is much more substantive overlap between socialism and communism than most political commentators could ever have imagined. They are seen as synonymous by some Eastern political scientists. That's the impression I get anyway.
In the beginning of this thread I asked one question Poland 1945 to 1989 Communism or Socialism. To answer this question correctly we have to understand the following,
What is communism?
Communism is both an economic system that seeks equality among members of society and a political ideology that advocates a classless and stateless society and rejects religion. It is regarded as a more extreme form of socialism.
What is Socialism?
Socialism is commonly regarded as an economic system that seeks to achieve equality among members of society.
Socialism and communism both adhere to the principle that the resources of the economy should be collectively owned by the public and controlled by a central organization. They differ, however, in the management and control of the economy. In socialism, the people themselves decide through communes or popularly elected councils on how the economy should work. This makes socialism a liberal system because majority of the people have a say on how the economy should be run. Communism, on the other hand, controls its economy through a single authoritarian party. It is thus characterized as conservative because the economy functions based on the decisions of a few.
The views of socialism and communism also differ in the distribution of wealth produced by the economy. Socialism supports the view that the goods and services produced should be dispensed based on the productivity of an individual. In contrast, communism believes that the wealth should be shared by the masses based on the needs of the individual.
There are two kinds of properties in socialism: (1) personal property that an individual can own and enjoy; and (2) industrial property that is dedicated for the use of producing society goods. Individuals, for example, can keep their digital cameras but cannot retain a factory that produces digital cameras. While personal properties can be kept, socialists make sure, however, that no private property will be used as an instrument for oppression and exploitation. In comparison, communism treats all goods and services as public property to be used and enjoyed by the entire populace.
Finally, socialism and communism differ in their views on capitalism. Socialists regard capitalism as a threat to equality and public interest. They believe, however, that there is no need to eliminate the capitalist class because it can be used as a good instrument in the transition to socialism as long as it is properly controlled. Socialists also believe that capitalism can exist in a socialist state and vice versa. From the point of view of the communists, capitalism must to be destroyed totally in order to give way to a classless society.
Summary:
1. Socialism is an economic system while communism is both an economic and political system.
2. In socialism, the resources of the economy are managed and controlled by the people themselves through communes or councils while in communism, management and control rest on a few people in a single authoritarian party.
3. Socialists distribute wealth to the people based on an individual's productive efforts while communists farm out wealth based on an individual's needs.
4. Socialists can own personal properties while communists can not.
5. Socialism allows capitalism to exist in its midst while communism seeks to get rid of capitalist
Based on the above we can conclude that it is correct to use both Socialism and Communism to describe the period in question. The economic system of Poland was socialism, although the ruling Government of Poland was communist, ruled directly from Moscow. Poland during this period should NOT be considered as a full communist state, like Russia, China, North Korea or Cuba. Poland was a socialist state.