Aside: URLs, URIs, and URNs

In the context of the web, all URIs are URLs!

URI, URN, URL

Huh? A name may be unique, but may not tell you anything about how to locate it.

"Designing Your New Work Life" by Bill Burnett and Dave Evans is a book.
It can be uniquely identified by the URN isbn:9780593467459, and various URLs can be used to locate it (well, if not locate it, at least locate how to purchase or locate it in a library)

https://designingyour.life/designing-your-new-work-life/
https://www.abebooks.com/9780593467459/Designing-New-Work-Life-Thrive-0593467450/plp
https://www.worldcat.org/title/1256628247?oclcNum=1256628247
https://www.amazon.com/Designing-Your-Work-Life-Happiness/dp/0593467450/
https://www.barnesandnoble.com/w/designing-your-new-work-life-bill-burnett/1140537816