Hierarchy classification:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts (hierarchy name)
4. language-related concepts
5. [languages and writing systems]
6. [languages and writing systems by general type]
7. languages (established systems of communication)

Anotations

Scope note:

Languages that are no longer spoken by native speakers. While the term may have overlapping usage with "extinct languages," an extinct language typically is limited to languages having no descendents. For example, Latin is a dead language but not extinct, because it has several descendent languages and is read and even spoken by scholars and in the Vatican.