What are components in React?

Short answer: Components are the building blocks of a React application. Each component is an isolated, reusable piece of the UI. ✅ Example: function Welcome(props) { return <h1>Hello, {props.name}</h1>;

Real-world example (ShopNest)

ShopNest’s storefront is React: components for ProductCard, CartDrawer, and CheckoutForm, with hooks for local UI state.

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.