Rada is the term for "parliament" or "assembly" or some other "council" in several Slavic languages.
Old High German rāt (from Proto-Germanic *rēdaz) passed (possibly through Polish) into the Czech, Slovak, Ukrainian, Belarusian and Russian languages.
[1] Alternately the source was the Gothic language radan - 𐍂𐌰𐌳𐌰𐌽 - to council, to deliberate, that passed to West Slavic in the Iron Age during the Wielbark and Chernyakhov cultures presence along Vistula river and in Western Ukraine, as the term "rada" may be present in such first millennium CE names as Slavic Radogoszcz, Radgoszcz, Radhošť, Radegost, Radagast, Ardagast - Radogost, and Gothic Radagaisus.
The dispersal to East Slavic Languages, could have happened later, possibly through Polish.
In Belarus In the Czech Republic In Poland In Russia In Slovakia In Ukraine Historically, the Verkhovna Rada was also the Supreme Soviet of the Ukrainian Soviet Socialist Republic (Українська Радянська Соціалістична Республіка [УРСР], Ukrayins'ka Radyans'ka Sotsialistychna Respublika [URSR]), which was itself part of the Union of Soviet Socialist Republics (Союз Радянських Соціалістичних Республік, [СРСР]), the word rada replacing the Russian word soviet in both cases.