The words of death are ancient words only known by the Troll King, but each word can apparently only be used once. They each shut down a specific part of the body, with "cunt" shutting down the brain and "nigger" shutting down the eyes. The Troll King is confident enough that he uses the words to simply demonstrate his authority rather than to actually help him win fights, as he is plenty powerful without them. Alex has shown interest in trying to learn the words of death. "Cunt" and "nigger" are the only words of death currently known.