You're actually pretty close! what is uri? It's indeed the big umbrella term—any string that identifies a resource. URLs are just one type, like you said, but they include the "how" and "where" (like `http://` or `ftp://`).
URNs, on the other hand, are like permanent names (e.g., `urn:uuid:1234`). They don’t tell you where to find it, just what it is.
Real-world example? Think of a URL as an address (Google’s HQ) and a URN as a person’s name (Elon Musk). Both are URIs, but they serve different purposes.
Why does it matter? In web dev, knowing what is uri helps with REST APIs, caching, and resource naming. Tools like Postman (postman.com) use URIs under the hood.
URNs, on the other hand, are like permanent names (e.g., `urn:uuid:1234`). They don’t tell you where to find it, just what it is.
Real-world example? Think of a URL as an address (Google’s HQ) and a URN as a person’s name (Elon Musk). Both are URIs, but they serve different purposes.
Why does it matter? In web dev, knowing what is uri helps with REST APIs, caching, and resource naming. Tools like Postman (postman.com) use URIs under the hood.