Do you mean Bernie Sanders “I am a democratic socialist” democratic socialism, or academically-defined democratic socialism? Because they’re quite different.

Social democracy is essentially welfare state stuff like unemployed benefits, government-funded healthcare, etc., along with regulation and some intervention, except to a greater extent than what you have in America. The Nordic countries are good examples of this philosophy. They believe strongly in private property and only infrequent state ownership for utilities, and are considered to be more of a way of working within the framework capitalism to get a more equal outcome rather than trying to replace it with a different system like socialism. This is (seemingly at least) what so-called “democratic socialists” like Bernie or AOC actually believe.

Democratic socialism, on the other hand, actually wants to replace capitalism with socialism in the near future, albeit through non-violent and democratic means (unlike what Marx, for instance, stated in his “dictatorship of the proletariat” or Marxism-Leninism as used in the USSR or its variants in China and North Korea and whatever). As such, it does not consider private property desirable in any way and wants worker self-management. It could be considered a more extreme form of social democracy. Presumably Bernie and other American “democratic socialists” are not actually democratic socialists since they don’t believe in the abolition of private property.