Homographs are words that share the same written form as other words but have a different meaning, and can be classified into either homonyms or heteronyms, depending on their pronunciation, e.g., homonyms have the same pronunciation, such as lie (untruth) [lÁi] and lie (to recline) [lÁi], whereas heteronyms have different pronunciation, such as desert (region) [déz@rt] and desert (to leave) [diz'@:rt].
disambiguation of heteronyms is a more important task in TTS synthesis, as the correct pronunciation of the word in its context must be determined.