Why is nomenclature essential? How is it done for living organisms?

(N/A) $\Rightarrow$ There are millions of plants and animals in our world.
$\Rightarrow$ We know the plants and animals in our own area by their local names.
$\Rightarrow$ These local names vary from place to place,even within a country.
$\Rightarrow$ Hence,there is a need to standardize the naming of living organisms so that a particular organism is known by the same name all over the world.
$\Rightarrow$ Nomenclature is the system of naming living organisms in such a way that a particular organism is known by the same name all over the world.
$\Rightarrow$ Nomenclature or naming is only possible when the organism is described correctly and we know to what organism the name is attached to. This is called identification.
$\Rightarrow$ Identification aims at finding the correct name and appropriate position of an organism in a classification system.
$\Rightarrow$ The morphological and anatomical characters are examined for proper identification before assigning a scientific name.