While I enjoy the movies a lot, they're nothing compared to the books. I'm what you might call a Tolkien Purist.

I wish they would recall that “Morgul/black magic” was a very powerful and existing thing as well and could have (and did with the Witch King) made some very powerful blades obviously, and ones very worthy of a name/names at that. Even “Herugrim” which was a Rohirrim forged blade with no magic powers to it was named. They only seemed to make the “good side” blades have names like “Narsil” which was a Dwarven forged blade or “Glamdring” which was Elvish. These are just my thoughts of what would have made an epic Lotr addition, a fallen Númenorian forged blade out of angmar fire and enchanted with Morgul sorcery, would have been freaking cool and it deserves a name as it can light on freaking fire for goodness sake so it obviously has some kind of magic in it. Imo this sword deserves a name as it is one of a kind and exclusive to the Witch King, something in sinister black speech like “GhâshAghBurzum” which means fire and darkness.

It is by far the coolest and most unique of the villain swords in Lotr with the metal crown pommel and overall eerie dark look to it. There are very many blades in Lotr that have names and a few cool ones that don’t, (like the morgul dagger) and then there is the Witch King’s Sword.

The witch kings sword