Neoliberals and Social Democrats

Arnold Kling has a post up in which he complains that the terms ‘neoliberal’ and ‘social democracy’ are both vague and perjorative. Neoliberalism "gets used as an undefined all-purpose boo-word." And "If neoliberalism is the ill-defined boo-word, then social democracy is the ill-defined yay-word." The post never really separates the two complaints, though, and so…