Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Object Genres (hierarchy name)
4. object genres (object classifications)
5. [object genres by function]

Anotations

Scope note:

Supports that are used to rest one's back, either made as separate pieces of furniture, as used in sub-Saharan Africa, or as attachments to backless seating. For the component parts of seating furniture that support sitters' backs, use "backs (furniture components)."