Simplify the following text for a Grade 7 native English-speaking person.
Original: La Teste-de-Buch ( Occitan : La TÃ sta de Bug , or ( Ã Å `` ) ) is a commune in the Gironde department in Aquitaine in south-western France .
Simplified: La Teste-de-Buch is a commune . It is found in the region Aquitaine in the Gironde department in the southwest of France .