What do socialism communism and fascism have in common?

Capitalism is an economic system based on private ownership of the means of production and the creation of goods and services for private profit.

Socialism is an economic system based on social ownership of the means of production, collective-decision making within firms, and the creation of goods and services for their utility.

Both capitalism and socialism are socio-economic systems. Another term for this is "mode of production", meaning, they are distinct modes of producing economic value.
Capitalism is an economic system based on private ownership of the means of production and the creation of goods and services for private profit.

Socialism is an economic system based on social ownership of the means of production, collective-decision making within firms, and the creation of goods and services for their utility.

Both capitalism and socialism are socio-economic systems. Another term for this is "mode of production", meaning, they are distinct modes of producing economic value.