This is a Dictionary/Glossary and Thesaurus in a making… It contains alphabetical lists of words that includes the meaning (sometimes also etymology and pronunciation) while the thesaurus contains synonyms and even antonyms. A dictionary explains the meaning of a word and shows how it is spelled and used. A thesaurus contains words that can be used in place of another word. Unlike the dictionary, the words in a thesaurus are arranged either alphabetically (just like the dictionary) or thematically (words of similar meanings grouped together). Read more: Difference Between Dictionary and Thesaurus | Difference Between