Imagine Node.js as the engine. It's a JavaScript runtime environment, meaning it enables developers to run JavaScript code outside of the browser, on the server itself. This opens up a whole new world of possibilities, like building servers, handling databases, and processing real-time data.
Express.js, on the other hand, is like a sleek sports car built on top of that engine. Think of it as a web application framework. It takes all the raw power of Node.js and adds some essential features to simplify building web applications. Routing, middleware, templating engines - Express.js packs them all in, letting you focus on coding the functionality instead of building everything from scratch.
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