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.
ETA (separatist group)
ETA grew out of a student group called Ekin, founded in the early 1950s, which published a magazine and undertook direct action. ETA was founded on 31 July 1959 as Euskadi Ta Askatasuna (Basque Homeland and Freedom) by students frustrated by the moderate stance of the Basque Nationalist Party. (Originally, the name for the organisation used the word "Aberri" instead of "Euskadi", creating the acronym "ATA". However, in some Basque dialects, "ata" means "duck", so the name was changed.)