Bosnia (region)
Bosnia (/Босна; ) is the northern region of Bosnia and Herzegovina, encompassing roughly 81% of the country; the other eponymous region, the southern part, is Herzegovina. "Bosnia" is an informal term for the whole country.
Bosnia and Herzegovina
On initial proclamation of independence in 1992, the country's official name was the Republic of Bosnia and Herzegovina but following the 1995 Dayton Agreement and the new constitution that accompanied it the official name was changed to Bosnia and Herzegovina.