What is the difference of persuasion and argumentation?

Well, in some things they are the same. A persuasive paper is the same as an argument paper. They shoudl both cover each side of the controversy, and persuade people to one side or the other. In conversation though, persuasion is usually quieter than argumentation, with less yelling. "Persuasion" usually has a connotation of calm and logical, and "Argument" has more of a connotation of emotion and heated debate. Also, persuasion is usually seen as one-sided (whether it is or not), whereas argumentation infers an opponent.