What is "moustiers"

Moustier or Moustiers is the name or part of the name of several communes in France and Belgium:

• Moustier, Hainaut, in Hainaut province
• Moustier-sur-Sambre, in Namur province

• Moustier, Lot-et-Garonne, in the Lot-et-Garonne département
• Moustier-en-Fagne, in the Nord département
• Moustier-Ventadour, in the Corrèze département
• Peyzac-le-Moustier, in the Dordogne département
• Saint-Sever-du-Moustier, in the Aveyron département
• Moustiers-Sainte-Marie, also called Moustiers, in the Alpes-de-Haute-Provence département
• Verneuil-Moustiers, in the Haute-Vienne département