Synonyms for Estate (same or very similar meaning)
WordNet sense 1 (extensive landed property (especially in the country) retained by the owner for his own use):
demesne, acres, land, landed estate
WordNet sense 2 (a major social class or order of persons regarded collectively as part of the body politic of the country and formerly possessing distinct political rights):
estate of the realm
From the ODE community, based on WordNet
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