Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Information Forms (hierarchy name)
5. information forms (objects)
6. document genres
7. [documents by function]
8. reference sources

Additional parents:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts
4. culture and related concepts
5. culture-related concepts
6. vocabulary

Narrower term/s

• thesauri[+]
  • multilingual thesauri
  • monolingual thesauri
  • microthesauri
• authority files [NP][+]
  • name authority files
  • subject authority files
• taxonomies (documents) [NP]
• controlled lists
• synonym rings
• subject headings
• [components for controlled vocabularies] [NP][+]
  • facets (controlled vocabulary)
  • guide terms
  • terms (controlled vocabulary) [+]
    • nonpreferred terms
    • preferred terms
    • natural order terms
    • inverted terms
    • descriptors (controlled vocabulary)
    • alternate descriptors (controlled vocabulary)
    • used for terms (controlled vocabulary)
    • terms-with-qualifier
    • terms-without-qualifier
    • current terms
    • historical terms
  • hierarchy roots
  • ancestors (controlled vocabulary) [+]
    • preferred parents
  • descendants (controlled vocabulary)
  • related terms (controlled vocabulary)
  • broader terms
  • narrower terms
  • siblings (controlled vocabulary)
  • qualifiers (thesaurus indicators)
• indexing languages [NP]

Anotations

Scope note:

A controlled vocabulary is an organized arrangement of words and phrases that are used to index content and/or to retrieve content through browsing or searching. It typically includes preferred and variant terms and has a limited scope or describes a specific domain. Controlled vocabulary is a broader concept than authority file, encompassing authority files as well as other controlled lists of terminology.