In which book can you find the correct spelling and etymology of a word?

Explanation

A dictionary or wordbook is a reference book which contains information about the vocabulary of a given language, including the correct spelling or the etymology of a given word. There are single-language dictionaries, or dictionaries with words in one language with their equivalents in another, also known as a lexicon. Most dictionaries list the words alphabetically, but some, especially those that are specialised within a particular field, are also categories after certain terms.