It's the same thing. Post-scarcity doesn't mean no scarcity. The point is, though, that people are not compelled to work under risk or threat of death, hunger, poverty, cold, homelessness or illness. If you can't or don't want to work, you are not doomed or socially shunned. Even if you do work, that's no guarantee that you'll not suffer from the occasional hardships of reality like there's not enough chocolate this month due to a drought, or avocados went extinct or whatever, but you won't die of starvation with millions of tons of food hoarded on a warehouse because a capitalist pig decided to rack up the price of rice.