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.
Hallaca
According to Adolfo Ernst, the word "hallaca" evolved from the indigenous Guarani language, stemming from the verb "ayua" or "ayuar", meaning "to mix or blend". From there, the construction "ayuaca" (mixed things) devolved to "ayaca" and ultimately to "hayaca" or "hallaca" (using Spanish silent "h" when written). Another version presumes that the word comes from an aboriginal language of the West of the country, whose meaning is "wrapping" or "bojote".The earliest use of the word in the modern sense is in a 1781 document of Italian missionary linguist Filippo Salvatore Gilii.