Definitions:
Communism vs. Socialism: you cannot have private property in Communism. In a socialist economic model, such as the French Economic Model, you can have private property, e.g.: France, Germany, we can comfortably say Europe in general.
Socialism vs. Capitalism: in Capitalism the driving motor of economy is corporate profit, wealth, greed. Thus, the accumulation of capital becomes the end that justifies the means. In contrast, in a social economic model, such as the French Economic Model, GOAL is Common Good. Democracy is not in the hands of corporations, but in the hands of We the People.