Blockages, or obstructions, refer to anything that prevents the normal flow or movement of substances, such as liquids, gases, or even physical objects. These can occur in various contexts, including plumbing systems, blood vessels, or airways. For example, a clogged drain can lead to water backup, while a blockage in a blood vessel can restrict blood flow, potentially causing serious health issues. In many cases, blockages can be caused by the accumulation of debris, such as food particles in pipes or cholesterol in arteries. Identifying and addressing these obstructions is crucial for maintaining proper function, whether in a household system or within the human body. Regular maintenance and monitoring can help prevent severe consequences associated with blockages.