This means that the means of production is owned and control by private bodies or an individuals. I've learned of this means of production and the other type and try to know which one is the best for the society but in the real sense of it non of the two is the best.
In the work of Karl marx he said those that own the means if the production are reffered to as the Have or Bourgeoise and those that work for their survival are reffered to as have not or Proletariat.
In the real sense of it should I say that Marx was poor and that made him to write so much about capitalism? Or he just wanted to write something? Or that's the truth about the system of capitalism? All these postulations in the reality of it shows that this system needs to be re-examined because the work those poor people do is greater than the money they receive.