<span>Dictionaries and thesauri are reference books for words. A Dictionary contains alphabetical lists of words that includes the meaning, etymology and pronunciation while the thesaurus is a book that contains synonyms and even antonyms. A dictionary explains the meaning of a word and shows how it is spelled and used.</span>
A dictonary is a book of words with their meaning, or usage. A thesaurus is a book also of words but describes them as ''word families'' by listing their synonyms without giving their meaning. A dictionary also can show the words in other languages or how they mean different in another language. Hope this helps! my fingers hurt xD