Eureka (word)
"Eureka" comes from the Ancient Greek word "heúrēka", meaning "I found (it)", which is the first person singular perfect indicative active of the verb "heuriskō" "I find". It is closely related to heuristic, which refers to experience-based techniques for problem solving, learning, and discovery.
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.