Osheniya Nahiya ce wadda ta ƙunshi ƙasashe kamar su Asturaliya, Sabuwar Zelandiya, Sabuwar Gini da wasu tsuburai masu dama a yankunan kasashen. Wasu na kiran nahiyar da Asturaliya. Kuma ta Yankin ta faɗaɗa har gabashin hemisphere da Yammacin Hemisphere, Oseaniya nada girman faɗin kasa 8,525,989 square kilometres (3,291,903 sq mi) da adadin yawan jama'a daya kai miliyan 41. Idan an kamanta da Nahiyoyi, yankin Oseaniya ce mafi ƙarancin faɗin ƙasa kuma na biyu a ƙarancin yawan jama'a bayan Antatika. Kalmar Osheniya ko Oceania kamar yadda take a ainahi, bata da wata gamsasshiyar ma'ana ta bai daya. Kasashe masu cin gashin kansu. Kasashen da suke a karkashin ikon gudanarwar wasu kasashen kokuma wadan da basu da cikakkiyar mulkin kansu. Dukkan wadannan tsuburai ne. Kasashe masu dangantaka da kasar New Zealand Kasashe rukunin tsuburan Micronesia Wells, John C. (2008). Longman Pronunciation Dictionary (3rd edition ed.). ISBN 9781405881180.CS1 maint: extra text (link)