I just want to muddy the water with some more political definition
Capitalism is primacy of ownership (all value goes to the owner of the property, asset, labor, vagina, whatever)
Socialism is all about fairness (in the extreme it goes all the way to "its is not fair that some people are smarter, etc, etc)
Marxism is an extreme subset of socialism that idolizes the prolateriat and espouses violence and spurns religion as a way to keep people in their place
Communism is a lot like Marxism, but more specifcally defines how things are owned.
Totalitarianism is economic and political power combined for specific power elite
Soviet style communism is totalitarianism dressed up as Marxism and/or communism

The US is currently rather socialist with some strong capitalist underpinnings. Germany and France (for example) have a little bit more socialism and a little less capitalism. (e.g. employees get to vote at sharholder meetings)

It appears that the democrats want to take the US toward socialism a little (how far? that depends on how long they have the white house and congress). This might be good news, unless you are rich, smart (or both). Interesting, it is mixed if you are good looking. If you are a good-looking guy, but not super rich, you can expect more pussy as we move toward socialism -- though your extra earning potential from being good looking is diminished. If you are a good looking girl, you get the same amount of sex in either system, it is just worth more in capitalism -- though you will generally have sex with richer, less good looking guys.