For science, music, sport, etc. Europe uses the same vocabulary. The languages only differ in their grammar, their pronunciation and their most common words. Everyone realizes why a new common language would be desirable: one could refuse to pay expensive translators. For science, music, sport, etc, Europe uses the same vocabulary. The languages only differ in their grammar, their pronunciation and their most common words. Everyone realizes why a new common language would be desirable. To achieve this, it would be necessary to have uniform grammar, pronunciation and more common words. The new common language will be more simple. The languages only differ in their grammar, their pronunciation and their most common words. Everyone realizes why a new common language would be desirable.