Classification: the arrangement of animals and plants in taxonomic groups according to their observed similarities. Taxonomy: the branch of science concerned with classification, especially of organisms systematics.
The scientific naming of species whereby each species receives a Latin or Latinized name of two parts, the first indicating the genus and the second being the specific name. The scientific system of naming an organism using two terms, the first being the genus and the second the species. http://www.dictionary.com/browse/binomial-nomenclature