The best replacement for region is area.

The best alternatives to region are rated as following:
★★★★★  area
★★★★  country
★★★  province
★★  continent
★★  district
★★  place
★★  territory
★  location
★  nucleus
★  ncr
★  locality
★  zone
★  providence
★  functional region
★  new england region
★  structural region
★  formal region
  region 11
  rejection region
  availability zone
  new england
  line search
  appellation
  location that is facing a shortage of resources
  autonomous region
  oblast

Your alternative for region is not listed? Suggest!
Speaking about region, one probably shouldn't forget about country list.

Other search terms related to region and their ratings are:
★★★★★ country list
★★★ myelopathy
You have in mind a companion for region and it is not yet here? Propose!



Google Trends

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region
area
country