They're the exact same except socialism is a more "watered down" version.
Definitions:
> Socialism is a political philosophy and movement encompassing a wide range of economic and social systems which are characterised by social ownership of the means of production, as opposed to private ownership.
> Communism is a political and economic ideology that positions itself in opposition to liberal democracy and capitalism, advocating instead for a classless system in which the means of production are owned communally and private property is nonexistent or severely curtailed.