Eureka, California
"Eureka" received its name from a Greek word meaning "I have found it!" This exuberant statement of successful (or hopeful) gold rush miners is also the official motto of the State of California. Eureka is the only U.S. location to use the same seal as the state for its seal.
Aranyaka
Several theories have been proposed on the origin of the word "Aranyaka". Originally, as per Oldenberg (1915), it meant (dangerous texts to be studied in the wilderness (Taitt. Ar. II). A later, post-Vedic theory holds that these texts were meant to be studied in a forest, while the other holds that the name came from these being the manuals of allegorical interpretation of sacrifices, for those in Vanaprastha (retired, forest-dwelling) stage of their life, however the Vanaprastha Ashrama came into existence only well after that of the Sanyasin (Sprockhoff 1976) -- according to the historic age-based Ashrama system of human life.