1. Server-Side Rendering (SSR): Next.js is built on top of React and provides out-of-the-box SSR capabilities, whereas React.js requires additional setup and configuration for SSR.
2. Opinionated Framework: Next.js is an opinionated framework that enforces a specific directory structure and configuration, whereas React.js is a more flexible library that can be used in a variety of ways.
3. Routing: Next.js has built-in routing capabilities, whereas React.js requires a separate library like React Router for routing.
