vault
The word evokes a sense of extreme security or structural strength. When referring to storage, it suggests an impenetrable fortress, creating a feeling of safety and exclusivity. This is a stark contrast to a safe, which is a portable object, whereas a vault is typically an architectural feature of a building. In an athletic or architectural sense, the word emphasizes the curve of an arch. Whether it is a physical ceiling or the trajectory of a body in the air, there is an inherent image of a sweeping, rounded arc that bridges two points of contact.
Countable when referring to a specific secure room or a gymnastics jump. Uncountable when referring to the architectural style of vaulted masonry.
Meanings
A secure room or compartment for storing valuables.
"The bank keeps the gold in a reinforced vault."
An arched ceiling or roof structure.
"The cathedral is famous for its stunning stone vault."