Well, neither can Deneba Software's BigThesaurus.
Words are important for a thesaurus.
The Most Complete Thesaurus Reference System'' - if this is true, I fear for the industry. For each meaning, a short definition is given, followed by synonyms, antonyms and related words. When you find the prefect word, click on it and tap a hot key to drop it into your text. In a jiffy, BigThesaurus presents you with a list of definitions, synonyms and antonyms. If it can't find your word, it will list several guesses of close matches.