Eureka Classis
On June 7, 1911, seven ministers and sixteen congregations organized to form the Eureka Classis. The name of the Classis came from the Greek word ‘eureka’ which means ‘I found it’ and not on the town Eureka, South Dakota, where the second meeting of the Classis would be held. The name was designed to mean that they had found a solution to their doctrinal problems with the rest of the denomination.
Eusko
The idea of the eusko starts when the AMBES (from French "Association pour la création d’une Monnaie locale Basque, Ecologique et Solidaire") took the example of another currency that was running in France, and thought that could be profitable and applicable to the Basque country.
The choice of the name came up when the AMBES asked citizens to choose a name for their optimal currency.