Aloud and clearly, breaking that old silence, Ged spoke the shadow's name and in the same moment the shadow spoke without lips or tongue, saying the same word: "Ged." And the two voices were one voice. (10.65)
We have a whole section to discuss what's up with this ending (yes, you know which section we're referring to) – and we're still not sure about it. But one thing is clear: when Ged and the shadow monster speak their name, that speaking somehow undoes their unnatural separation and they become one. Can we imagine this ending happening without the use of language?