keys must be unique, but names are conventions, so they don't have to.

I search for "Lyn", I get the npub that has the highest probability of being what I am looking for, which is nostr:nprofile1qqsw4v882mfjhq9u63j08kzyhqzqxqc8tgf740p4nxnk9jdv02u37ncpz4mhxue69uhhyetvv9uju6mpd4czuumfw3jsz9nhwden5te0wfjkccte9ec8y6tdv9kzumn9wsq3yamnwvaz7tmsw4e8qmr9wpskwtn9wvql3tqm, because of how I am connected to her.

There are many other Lyns out there, some at the center of someone else's WoT.

I don't see why this can't work for websites or other things.