Garbage dumps, often referred to as landfills, are designated areas for the disposal of waste materials. Other synonyms for garbage dumps include refuse heaps, trash heaps, dumpsites, junkyards, and landfills. Refuse heaps and trash heaps generally refer to less organized piles of waste materials, especially in developing countries. Dumpsites and junkyards may refer specifically to areas where scrap metal or other reusable materials are collected. Landfills are typically managed and engineered facilities where waste is contained and isolated from the environment to minimize its impact. Whether referred to as garbage dumps, refuse heaps, or landfills, the proper disposal of waste materials is a critical aspect of environmental sustainability for communities around the world.