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.
Bosanska Krajina
Bosanska Krajina is not a formal entity within the structure of Bosnia and Herzegovina; however it has a significant cultural and historical identity that was formed through several historic and economic events. The territory of Bosanska Krajina is currently divided between two entities of Bosnia and Herzegovina: Republika Srpska and the Federation of Bosnia and Herzegovina.