Economics is concerned with the production, consumption, and distribution of products and services. Whereas communism is a mix of government structure and an economic system, socialism and capitalism are the primary means by which societies regulate, own and/or control the production, consumption, and distribution of products and services.
Neither system should be oversimplified: as time progresses, mankind has a way of altering and/or redefining such terms, to suit their own particular ideas, needs and/or beliefs; and economics is no different.
Speaking solely for myself, I am a firm believer in free-market capitalism economics, as nothing has proven more effective, in allowing societies to grow and prosper, with a greater propensity for allowing the greatest number of people, to thrive.
For a successful economic system to correctly prosper, the longer we bleed and fleece the producers, the less they’re going to be willing to produce; and the more likely they are to pack up their toys and move out of the country.