What is the difference between a capsule wardrobe and minimalism?
A capsule is an interoperability system for getting dressed; minimalism is a philosophy about owning less. They overlap but solve different problems.
Minimalism asks how little you can own. A capsule asks how well what you own works together. You can run a 60-piece capsule that is not minimalist at all, and you can own 15 random minimalist pieces that still produce nothing to wear. If your actual pain point is decision fatigue in the morning, the capsule rules - total interchangeability, a tight palette, one-for-one replacement - fix that directly, whatever your feelings about owning things.