Kachha, or raw, refers to materials that are unprocessed or in their natural state. This term is often used in the context of food, textiles, and construction. For example, raw fruits and vegetables are those that have not been cooked or altered, retaining their original nutrients and flavors. In the context of construction, kachha materials may include unrefined wood, bamboo, or mud, which are used in traditional building methods. These materials are typically less expensive and more environmentally friendly, but they may require more maintenance compared to processed alternatives.