Meaning and Definition of Cave

Definition of cave

The word cave is the one that normally use to designate the underground cavity or that is established between rocks, i.e., it is under the Earth's surface, and it may be natural or artificial.
In the case of natural caves, generally, it's natural cavities within a field that originated as a result of erosion on flows of lava, water, ice, or a mixture of both issues. Also, another factor of creation of a natural cave is the dissolution of the limestone rock from contact with acidic water.
Historically the caves were used by humans and animals alike as a guard against the aggressive action of the various climate agents. Even many have used as housing continues over time. An intrinsic characteristic of the caves is that they are dark and moist.
Note that the caves you can qualify them in: caves primary, because they were born at the same time than the rock that surrounds them, while the secondary caves are those generated in-situ in rocks once they themselves have been formed and after the succession of a process in which rock is broken down and loses matter against erosion.
And within secondary schools, it is plausible to meet with the following types: sea caves (conform on the shores of the seas), ice caves (born at the bottom of a glacier after the melting of the same or any current ice) and karst caves (comply in calcareous rocks after the dissolution of the rock).
And in colloquial use in some Spanish-speaking countries, such is the case of Argentina, is called cave to those clandestine strongholds in which exchange transactions are carried out outside of the official foreign exchange market.