For the duration of Ottoman rule, the word Bosniak came to refer to all inhabitants of Bosnia; Turkish terms such as "Boşnak milleti", "Boşnak kavmi", and "Boşnak taifesi" (all meaning, roughly, "the Bosnian people"), were used in the Empire to describe Bosnians in an ethnic or "tribal" sense; and indeed, 17th-century Ottoman traveler and writer Evliya Çelebi reports in his work Seyahatname of the people in Bosnia as natively known as Bosniaks (Bošnjaci).[39] However, the concept of nationhood was foreign to the Ottomans at that time – not to mention the idea that Muslims and Christians of some military province could foster any common supra-confessional sense of identity. The inhabitants of Bosnia called themselves various names: from Bosniak, in the full spectrum of the word's meaning with a foundation as a territorial designation, through a series of regional and confessional names, all the way to modern-day national ones.