People often confuse "socialism" with the concept of "communism." While the two ideologies share much in common, in fact communism encompasses socialism.
The primary difference between the two is that "socialism" applies to economic systems, whereas "communism" applies to both economic and political systems.
Another difference between socialism and communism is that communists directly oppose the concept of capitalism, an economic system in which production is controlled by private interests.
Socialists, on the other hand, believe socialism can exist within a capitalist society.