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Purlieu
Originally, the ground near a royal forest, which, having been unlawfully added to the forest, was afterwards severed from it, and disafforested so as to remit to the former owners their rights.
The parts or places which surround another place, or lie in its neighborhood; suburbs; as, the environs of a city or town.
oewn 202368% interchangeable
Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.