Synonyms for Region:

n.

the borderland, airspace, breadbasket, terrain, environs, co. entrails, cavity, apparatus, ward, chamber, organ, canal, guts, organic, innards. belt. area (noun)
patch, district, section, acre, area, rood, territory, zone, domain, hectare, sector.
arena (noun)
courtyard, arena, beat, province, locale, campus, colosseum, hippodrome, stage, bailiwick, battlefield, setting, gymnasium, circuit, gallery, auditorium, amphitheater, dominion, hall, precinct, battle-ground, pen, circus, ground, realm, turf, theater, ring, enclosure, circle.
belt (noun)
stretch, area.
body (noun)
area.
circuit (noun)
circle.
confines (noun)
extent, scope, reach, dimension.
country (noun)
state, kingdom.
district (noun)
parcel.
domain (noun)
turf, empire.
enclosure (noun)
courtyard, plot, room, patch, pen.
extent (noun)
scope, length, measure, leeway, range, extent, dimension, span, volume, space, field, acreage, plane, stretch, neighborhood, room, scale, reach, plateau.
geographical area (noun)
district.
location (noun)
part.
quarter (noun)
area, quarter, zone, district, locale.
region (noun)
arena, earldom, bailiwick, city, range, division, place, country, county, colony, part, territory, field, area, domain, dukedom, environs, duchy, municipality, zone, province, state, belt, precinct, locale, nation, ground, quarter, dominion, ward, borough, canton, lot, town, sector, empire, section, realm, district, neighborhood, commonweal, parcel, shire, locality, kingdom, tract, terrain, riding, plot.

Other synonyms:

belt. ground
terrain.
Other relevant words:
apparatus, cavity, canal, innards, co, entrails, guts, environs, organ, airspace, organic, terrain, breadbasket, chamber, belt, ward, part.

Usage examples for region

  1. I am surprised at seeing so few signs of natives in this region – Australia Twice Traversed, The Romance of Exploration Australia Twice Traversed. The Romance Of Exploration, Being A Narrative Compiled From The Journals Of Five Exploring Expeditions Into And Through Central South Australia, And Western Australia, From 1 by Ernest Giles
  2. Presently I came into a region where the trees were larger and the travelling was easier. – The Blue Flower, and Others by Henry van Dyke
  3. And then he'll likely clear out, and keep away from this region till we've all had time to forget him, and the coast is clear again. – The Voodoo Gold Trail by Walter Walden