| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | octahedron | mathematical | The octahedron is a regular polyhedron with eight equilateral triangular faces. | 1 |
| 2 | octahedron | mathematical | A polyhedron with eight faces, twelve edges, and six vertices, often studied in geometry and crystallography. | 1 |
| 3 | octahedron | mathematical culture | A solid with eight triangular faces, 12 edges, and 6 vertices. | 1 |