Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Furnishings (hierarchy name)
5. furnishings (works)
6. [furnishings by form or function]
7. furniture
8. [furniture by form or function]
9. seating furniture
10. multiple-seating furniture
11. sofas

Anotations

Scope note:

Straight-fronted sofas with small triangular seats (sometimes detachable) set outside the arms at either end. For S-shaped sofas with ends curving inward so two people could sit face to face, use "canapés à confident."