What are the differences between oasis and playa?

An oasis is a fertile area in a desert, typically featuring water sources such as springs or wells, enabling vegetation and wildlife to thrive. In contrast, a playa is a flat, dry lakebed that forms in arid regions, often characterized by salt flats and little to no vegetation. While oases support life and agriculture, playas are usually dry and barren, serving as temporary water bodies during rare rain events. Both are important features of desert ecosystems but serve different ecological roles.