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.
Outline of Serbia
Serbia – landlocked sovereign country located in Southeastern Europe and comprising the southern portion of the Pannonian Plain and a central portion of the Balkan Peninsula. Serbia is bordered by Hungary to the north; Romania and Bulgaria to the east; the Republic of Macedonia and constitutionally only, Albania (via Kosovo, a disputed territory over which Serbia has no control, thus no direct access to Albania) to the south; and Croatia, Bosnia and Herzegovina and Montenegro to the west. The capital of Serbia is Belgrade.