Classification: the arrangement of animals and plants in taxonomic groups according to their observed similarities (including at least kingdom and phylum in animals, division in plants, and class, order, family, genus, and species).
Taxonomy: the branch of science concerned with classification, especially of organisms; systematic.
binomial nomenclature is a system of which scientist use to classify and order species by using one name for all the languages to understand. Scientist classify these living things and give them universally recognized, scientific names. These names are used by scientists all around the world, regardless of what the living thing is called in the scientist's local language.