Waste can be categorized into several types based on its origin and characteristics. The main types include municipal solid waste, which consists of everyday items discarded by the public, and hazardous waste, which poses risks to health or the environment due to its toxic nature. Other types include industrial waste, generated from manufacturing processes, and biodegradable waste, which can decompose naturally, such as food scraps and yard waste. Another classification is based on the state of the waste. Liquid waste includes wastewater from households and industries, while solid waste encompasses items like plastics and metals. E-waste, or electronic waste, refers to discarded electronic devices, and construction waste arises from building activities. Understanding these types helps in effective waste management and recycling efforts.