Difference between socialism and democratic socialism
Democratic socialism is an ideology that advocates for social ownership of the means of production, which means basic functions of the economy like production of raw resources should be socially owned. Social ownership doesn't necessarily mean government ownership, it can also include arrangments such as employee ownership.
The difference between democratic socialism and ordinary socialism is that a democratic socialist believes it is best to have a socialist economy, but within a democratic system of government. In contrast, when most people think of socialism they immediately think of the Marxist socialism, in which the socialist system is run by an authoritarian government that is far from democratic.