What is the difference between local component state and global state?

Short answer: Local State (useState) Global State (Redux/Context) Exists within a component Shared across multiple components Ideal for UI-level concerns Ideal for app-wide data (e.g., auth, theme) Cannot be accessed by siblings Easily accessible across app

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.