Functor

Functor can be visualized as a bundle of fibers that connects two separated pieces of a broken coconut. Each thread of the fiber bundle can be thought of as a single instance of a function. The process of comparing two different ways of how a coconut can be broken can be thought of as natural transformation.

Implementation

A functor can be thought of as a template of information content. Which is a special kind of dictionary, or a specialized case of function.