 |
| |||
| abierta; aplanada; cóncava | |||
| hueco | |||
| cóncavo; cóncavo-convexo | |||
| concavo | |||
| concave: 32 phrases in 12 subjects |
| Agriculture | 8 |
| Antennas and waveguides | 1 |
| Industry | 4 |
| Information technology | 1 |
| Life sciences | 2 |
| Mechanic engineering | 2 |
| Medical | 7 |
| Metallurgy | 2 |
| Packaging | 2 |
| Physical sciences | 1 |
| Transport | 1 |
| Zoology | 1 |