Synonyms for Zone (same or very similar meaning)
WordNet sense 1 (any of the regions of the surface of the Earth loosely divided according to latitude or longitude):
geographical zone
WordNet sense 2 ((anatomy) any encircling or beltlike structure):
zona
WordNet sense 3 (regulate housing in; of certain areas of towns):
district
WordNet sense 4 (separate or apportion into sections):
partition
From the ODE community, based on WordNet
add/edit