Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by origin]
6. biological material
7. plant material
8. [wood and wood by product]
9. wood (plant material)
10. [wood by composition or origin]
11. hardwood

Anotations

Scope note:

Wood derived from trees of the genus Guaiacum; it is generally the heaviest, hardest, and most dense type of commercially available wood, black to brownish green in color. It is tough and difficult to carve, but valued for its fine grain that polishes to a high gloss. It is naturally resistant to fungi. It is used to make pulleys, shafts, axles, and bowling balls. The wood is relatively waterproof because of its high fat content.