Before defining the chosen noun, it is necessary to define what a noun is.
Noun is a class of words that has the function of determining the name of a being, an object or even a situation. In other words, it is the class of words that names things.
The chosen noun can be described with a construction that is used to connect two regions that are separated by something that prevents people from one region from reaching another, such as a river, a hole and a road. This construction, then, provides an alternative path, linking these two regions while going over what is between the two regions.
