Describe the binomial nomenclature.

(N/A) Binomial nomenclature is a formal system of naming organisms,proposed by $Carolus$ $Linnaeus$.
$1$. Each scientific name consists of two components: the $Genus$ name and the specific $epithet$.
$2$. The $Genus$ name starts with a capital letter,while the specific $epithet$ starts with a small letter.
$3$. When handwritten,both components are underlined separately,and when printed,they are written in $italics$ to indicate their Latin origin.
$4$. The name of the author who first described the species is often written in abbreviated form after the specific $epithet$ (e.g.,$Mangifera$ $indica$ $Linn.$).