No, they don’t do “the exact same thing.” It’s a question of scale. Most countries don’t seize all of the assets of an entire class of people to the extent it wipes them out as a cohort. Taxing personal incomes to pay for welfare is radically different from liquidating the kulaks.
Ah yes, the whole “real communism has never been achieved” argument. That doesn’t change the fact that several governments killed millions and millions of people trying to achieve their perfect, classless society.
Your bank account isn’t a real thing? Your house? Your car? Do you have jewelry? Art? These aren’t real things?