Dictionaries, glossaries, and thesauruses are all resources that people may use to find out the meaning, spelling, pronunciation, and other things about an unfamiliar word.
Dictionary
A dictionary is a collection of words, either in a book or online, that is usually arranged in alphabetical order. It may include information on the definition, pronunciation, usage, syllabication, and origin of words.
A glossary is an alphabetical list of terms that relate to a specific subject. Each term is defined, and sometimes, an example of the term will also be given. Glossaries can usually be found at the back of books.
8th Grade Reading - Word Resources Lesson