(s)apart, isolated, obscureremote and separate physically or socially“existed over the centuries as a world apart”, “preserved because they inhabited a place apart” (W.H.Hudson), “tiny isolated villages remote from centers of civilization”, “an obscure village”
(r)apart, asidenot taken into account or excluded from consideration“these problems apart, the country is doing well”, “all joking aside, I think you're crazy”
(r)aside, apartplaced or kept separate and distinct as for a purpose“had a feeling of being set apart”, “quality sets it apart”, “a day set aside for relaxing”