* Definitions: It only provides synonyms and antonyms for words.
* Grammar or usage information: It doesn't tell you how to use a word correctly.
* Original content: It relies on existing language and literature to compile its entries.
* Real-world examples: It doesn't provide specific examples of how to use a word.
* Historical information: It focuses on current word meanings and usage.
Essentially, a thesaurus is a tool for expanding your vocabulary, not a comprehensive dictionary or a guide to proper language usage.