10. A display apparatus comprising: an input unit configured to receive an uttered voice of a user; a display configured to display a voice recognition result of the uttered voice; a voice processor configured to extract voice information from the uttered voice, compare the voice information to information associated with words in a pronunciation dictionary, and, based on reliabilities associated with the comparing, determine similar words which are similar to words in the uttered voice; and a controller configured to set, as a target word with respect to the uttered voice, a word satisfying a predetermined condition, control the display to display one or both of the target word and a similar word list including one or more of the similar words other than the target word, set an execution command, and adjust a critical value assigned to the similar word set as the execution command from among the plurality of similar words including the target word, wherein, in response to an execution command not being received for a predetermined critical time or in response to a selection command with respect to the target word being received, setting the execution command comprises setting the target word as the execution command.
10. A display apparatus comprising: an input unit configured to receive an uttered voice of a user; a display configured to display a voice recognition result of the uttered voice; a voice processor configured to extract voice information from the uttered voice, compare the voice information to information associated with words in a pronunciation dictionary, and, based on reliabilities associated with the comparing, determine similar words which are similar to words in the uttered voice; and a controller configured to set, as a target word with respect to the uttered voice, a word satisfying a predetermined condition, control the display to display one or both of the target word and a similar word list including one or more of the similar words other than the target word, set an execution command, and adjust a critical value assigned to the similar word set as the execution command from among the plurality of similar words including the target word, wherein, in response to an execution command not being received for a predetermined critical time or in response to a selection command with respect to the target word being received, setting the execution command comprises setting the target word as the execution command. 11. The apparatus as claimed in claim 10 , wherein the voice information comprises pronunciation information on text converted through voice recognition on the uttered voice.