| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | ellipse | mathematics | A common geometric shape with mathematical and physical significance | 1 |
| 2 | ellipse | mathematics | Ellipse is a conic section with eccentricity less than 1. | 1 |
| 3 | ellipse | mathematics | A geometric shape with two focal points, commonly studied in mathematics | 1 |
| 4 | ellipsoid | mathematics | An important geometric shape in mathematical and physical models | 1 |