natural covering(n = noun.object) cover, covering - a natural object that covers or envelops; "under a covering of dust"; "the fox was flushed from its cover"
is a kind of natural object
has particulars: scale, shell, test, body covering, case, sheath, integument, blanket, mantle, crust, encrustation, incrustation, envelope, cap, hood, indument, indumentum, roof, shell, eggshell, shell, skim, slough, snowcap, vesture, peridium, pericarp, seed vessel, chlamys, floral envelope, perianth, perigone, perigonium, sac, theca, indusium, bark

bed covering, body covering, cloth covering, covering, covering fire, covering letter, covering material, floor covering, head covering, lap covering, leg covering, natural, natural ability, natural action, natural childbirth, natural depression, natural elevation, natural enclosure, natural endowment, natural event, natural family, natural family planning, natural fiber, natural fibre, natural gas, natural glass, natural history, natural immunity, natural language, natural language processing, natural language processing application, natural language processor, natural law, natural logarithm, natural number, natural object, natural order, natural phenomenon, natural philosophy, natural process, natural product, natural product chemistry, natural resin, natural resource, natural resources, natural right, natural rubber, natural science, natural scientist, natural selection, natural shape, natural spring, natural state, natural steel, natural theology, natural virtue, natural world, protective covering, royal society of london for improving natural know, short covering