Cavity
Definition 1 of 4
Pro Tip 1/3
Metaphorical Use
Sometimes 'cavity' is used metaphorically to express emptiness in non-physical things. The book left a cavity in her heart.
Pro Tip 2/3
Negative Connotation
'Cavity' often implies a problem or a deficiency needing to be addressed. The engineers found a cavity in the spacecraft's insulation.
Pro Tip 3/3
Physical Structures
In construction or architecture, 'cavity' refers to a designed gap within walls. This building has cavity walls for better insulation.