part — a portion or division of a whole that is separate or distinct; piece, fragment, fraction, or section; constituent: the rear part of the house; to glue the two parts together.
separate — to keep apart or divide, as by an intervening barrier or space: to separate two fields by a fence.
unmix — to combine (substances, elements, things, etc.) into one mass, collection, or assemblage, generally with a thorough blending of the constituents.
disjoin — to undo or prevent the junction or union of; disunite; separate.
divide — to separate into parts, groups, sections, etc.