What do URL and URI stand for?

So today I thought, I wonder what the definitions for the URL and URI acronyms are. Just incase anyone else out there is curious too.

URL: Uniform Resource Locator

URI: Uniform Resource Identifier

 

So what’s the difference between the two? All URLs are URIs, but not all URIs are URLs.

It’s like trying to explain that a Human is a Mammal but a Mammal is not always a Human. – DamnHandy

These are URLs

http://somewebpage.com

http://somewebpage.com/abc/

http://somewebpage.com/abc?g=t

Since they are all URLs they are therefore all URIs too.

This is a URI but is not a URL

urn:mpeg:mpeg7:schema:2001urn:isbn:0451450523

 

Hopefully that makes sense.

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