Did you meant Social Democratic?
Socialism and Social Democracy are two different things like Astrology and Astronomy
Venezuela is socialist, Nordic countries are best example of Social Democracy.
Semantics, there is nothing wrong with talking about the socialism of Europe, it exists... Social democracy is just a fancy term meant to confuse Americans into not hating us for employing socialism in our policy decisions. ^^
Social Democracy is a categorical construct that envelops governmental structure and ideology in a way that does not really apply 100% to any country and is mostly worthless as a term.
Nordic countries are not republics as our executive branch is not that of a president but rather that of ministers and a prime minister, we do not elect a person to take the steering wheel but a party, and therefore in a sense we elect a political program. The executive branch in Nordic countries hold less authority than most examples of presidents, almost everything has to be approved by the parliament (legislature branch). We don't elect our executive branch directly, we elect our legislature branch. The parliament consist of representatives from the different parties, the amounts from each party are proportional to the number of votes the parties got during the election. The parties in the parliement that holds a majority of the mandates either on their own or in coalitions of multiple parties can form a majority executive branch, if the parties can't agree, our king (at least in norway) can actually decide upon a party to run a minority executive branch. Our executive branch is as powerful as the percentage of votes they get, coalition governments are the norm in Norway, rarely does one party get a majority vote and when they do there is usually a lot of disagreement within the party.
Parliamentarism or "Representative democracy" are the best terms to describe our governmental structure, but many would call this social democracy.
Venezuela is a republic in the sense that it has a president, it has a parliament/congress/legislature called the national assembly. The national assembly is voted forth in the same manner as is seen in the parliament elections in Nordic countries, party lists of potential representatives from that party, names of individuals within that party who a voter may give weighting to, or decide to simply make a neutral vote for the party.
None of the above is related to socialism, but it is an important part of what distinguish and defines the governmental structure part of the term "social democracy". The ideological part of the term "social democracy" about mixed economy, liberalism, socialism, and about embracing capitalism without leaving communism entirely is not really clearly defined, it is obscure and foggy at best, and that is why that part of the term is imo pretty much worthless and don't really apply to much. It contain so much meaning that it becomes meaningless. Many Nordic people view themselves as social democrats, but knowing that doesn't make you much wiser about what kind of politics they prefer, they could be hardcore liberalists or socialists to the extreme when it comes to economics.
Both Venezuela and the Nordic countries has passed policies which are ideologically based in socialism, policies meant to reduce the difference between the rich and the poor of the society. Sure there are differences in political opinions, methods and ideology between the average nordic politician and the average venezuelan politician, but when it comes to socialism in general, they are actually more on the same page than most would think.