Sting (Middle-earth)
Sting has the magical ability to detect orcs or goblins nearby, glowing blue in their presence, as it did when the Fellowship encountered orcs in the mines of Moria. Tolkien establishes this as a common property of First Age Elf blades, particularly those forged in Gondolin. Sting is also exceptionally sharp. Bilbo manages to thrust it without effort deep into a wooden beam at Rivendell. Frodo also wounds a troll in Moria, after Boromir notches his own sword with his attempt. Sam uses Sting to cut through the giant spider Shelob's strong webs with ease, and also wound the spider, driving it away from the paralyzed Frodo.
Nazgûl
Only two of the Nazgûl are named or identified individually in Tolkien's works. Their leader was the Witch-king of Angmar; he is the only individual Nazgûl identified in "The Lord of the Rings". Writings unpublished in Tolkien's lifetime identify his second-in-command as Khamûl, the "Black Easterling" or the "Shadow of the East". In the text of "The Lord of the Rings", after the fall of the Lord of the Nazgûl, command of Mordor's army in the field falls to Gothmog, the "lieutenant of Morgul"; nothing else is said of Gothmog, but since Minas Morgul was closely associated with the Nazgûl, some have speculated that Gothmog was one of their number. (For example, the 1977 wargame "War of the Ring" depicts Gothmog as a Nazgûl.)