prototypes
noun
Definitions
An original form or object which is a basis for other forms or objects (particularly manufactured items), or for its generalizations and models.
An early sample or model built to test a concept or process.
Example: The prototype had loose wires and rough edges, but it worked.
A declaration of a function that specifies the name, return type, and parameters, but none of the body or actual code.
An instance of a category or a concept that combines its most representative attributes.
Example: A robin is a prototype of a bird; a penguin is not.