A dictionary is a book containing a selection of words, usually arranged alphabetically, concerning which information about meanings, pronunciations, etymologies, and a wealth of other detail is provided: "The Frenchman purchased a dictionary of the English language." A glossary is a specialized dictionary, a list of terms in a particular subject, area of usage, or field of study: "This is a glossary of recent American slang." "At the end of this volume you will find a glossary of terms that may be unfamiliar to you." A glossary is designed to explain or define terms but usually does not deal with pronunciation, derivation, and other information provided by a dictionary. A thesaurus is still another kind of specialized dictionary, one that usually confines itself to a treatment of synonyms and antonyms: "Roget's International Thesaurus is a helpful book for everyone who writes, speaks, or reads."
Dictionary of problem words and expressions. Harry Shaw. 1975.