SPATIAL MEANS ( EXCHANGE AND COMMUNICATION )
- linear means of space
- hole , hollow line , Hollow, Pore, Vent, Meash, Orifice, Meuse, punch, perfo∣rate, run thorough.
- planar means of space
- cleft , split , gap
- ground space , lacuna
- domain means of space
- spatial tubular means
- Hollow , cavity
Discussion