sar (pron. shar) - mud, köz - between, among, common to (Hungarian)
Sliwa, Szilva, Šljivo, Šljivić
(Polish, Hungarian, Bosnian/Croatian, South Slavic)
(Serbian and other ex-Yu languages) This is a straight adjective, in masculine gender. Free as in not enslaved, not as in beer. Name quite popular immediately after WWII. The feminine pair, Slobodanka, is a noun.
sor [shor] - row, order; soros [shorosh] - orderly, lined up, in order (Hungarian)