Glossaries, vocabularies, etc. - *** not valid as subject

A glossary (from Ancient Greek: γλῶσσα, glossa; language, speech, wording), also known as a vocabulary or clavis, is an alphabetical list of terms in a particular domain of knowledge with their definitions. Glossaries are often placed at the end of a book to define novel, uncommon, or specialized terms. Glossaries are most commonly found in non-fiction. A bilingual glossary defines words in another language. A glossary explains concepts relevant to a field of study or action, as a form of ontology. Techniques for extracting an ontology or computational lexicon have been proposed.