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.
Bosna (river)
Its source is at the spring Vrelo Bosne, at the foothills of the Mount Igman, on the outskirts of Sarajevo, capital of Bosnia and Herzegovina. The spring is one of Bosnia and Herzegovina's chief natural landmarks and tourist attractions. From there, the Bosna flows northwards, through the heart of Bosnia, eventually becoming a right tributary of the Sava River in Bosanski Šamac. The Bosna flows through a number of cantons. From its starting point in the Sarajevo Canton, it flows through Zenica-Doboj Canton, Doboj Region, and Posavina Canton, in that order. On its way north the River Bosna also passes through the cities of Visoko, Zenica, Maglaj, Doboj, Modriča and Bosanski Šamac.