Classifying is the grouping together of items/ objects according to a given basis. In classifying, it is important to consider the similarities of objects and dividing them according to their differences.
Mills and Waters (1980) in Igoy et. al. defined classification as almost any act of noting relationships; the act of locating a specimen of all the different kinds of objects which possess a given characteristics.
"Each of Jamaica's four great gardens, although established along similar principles, has acquired its own distinctive aura. Hope Gardens, in the heart of Kingston, evokes postcard pictures from the 1950s of public parks, gracious and vaguely suburban and filled with familiar favorites--lantana and marigolds--as well as exotics. Bath has retained its Old World character; it is the easiest to conjure as it must have looked in Bligh's time. Cinchona of the clouds is otherworldly. And Castleton, the garden established to replace Bath, fleetingly evokes that golden age of Jamaican tourism, when visitors arrived in their own yachts--the era of Ian Fleming and Noel Coward, before commercial air travel unloaded ordinary mortals all over the island." (Caroline Alexander, "Captain Bligh's Cursed Breadfruit." The Smithsonian, Sep. 2009)