Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Costume (hierarchy name)
5. costume (mode of fashion)
6. [costume by function]
7. ceremonial costume
8. academic costume

Anotations

Scope note:

Symbolic and ornamental elements of academic costume worn on a mortarboard, typically made of braided thread that signifies the completion of a degree or academic achievement. Color often reflects a field of study or degree level.