Slavs
Slavs can be further grouped by religion. Orthodox Christianity is practiced by the majority of Slavs. The Orthodox Slavs include the Belarusians, Bulgarians, Macedonians, Montenegrins, Russians, Serbs, and Ukrainians and are defined by Orthodox customs and Cyrillic script as well as their cultural connection to the Byzantine Empire (Serbs also use Latin script on equal terms). Their second most common religion is Roman Catholicism. The Catholic Slavs include Croats, Czechs, Kashubs, Moravians, Poles, Silesians, Slovaks, Slovenes, and Sorbs and are defined by their Latinate influence and heritage and connection to Western Europe. There are also substantial Protestant and Lutheran minorities especially amongst the West Slavs, such as the historical Bohemian (Czech) Hussites.
Sloboda Ukraine
The name derives from the term "sloboda" for a colonial settlement free of tax obligations, and the word "ukraine" in its original sense of "borderland". The etymology of the word Ukraine is seen this way among Russian, Ukrainian and Western historians such as Orest Subtelny, Paul Magocsi, Omeljan Pritsak, Mykhailo Hrushevskyi, Ivan Ohiyenko, Petro Tolochko and others. It's supported by the Encyclopedia of Ukraine and the Etymological dictionary of the Ukrainian language. In Russia, the name "Ukraine" (Russian: "Ukraina") is perceived as a calque of "okraina", meaning a frontier ("krai"), thus "Sloboda Ukraine" is known as a "free-settled frontier". In Ukraine, the region is accepted as a free settled region, part of the whole Ukraine.