<P> Their senses, especially smell, are enhanced . As the Nazgûl hunted Frodo across The Shire, they can hear what they think to be snuffling, and sometimes sees them crawling / crouching on the ground . On Weathertop, Aragorn explains that they smell the blood of living things at all times . They can also keenly feel the presence of others, more - so than mortals . Their sight works differently as well: </P> <P> They themselves do not see the world of light as we do, but our shapes cast shadows in their minds, which only the noon sun destroys; and in the dark they perceive many signs and forms that are hidden from us: then they are most to be feared .--"A Knife in the Dark", The Fellowship of the Ring, p. 237 </P> <P> In The Fellowship of the Ring, they were armed with steel swords, while the Witch - king wielded a Morgul blade that could turn its victim into a wraith . During the Battle of the Pelennor Fields, the Witch - king bore a "long pale sword", and later used a mace against Éowyn . </P> <P> The Witch - king practiced black magic, and used it to break the gates of Minas Tirith . Tolkien said of the Nazgûl "...their chief weapon was terror . This was actually greater when they were unclad and invisible; and it was greater also when they were gathered together ." They exuded an aura of fear: </P>

Lord of the rings names of the nazgul