Compressed air is air that is stored at a pressure greater than atmospheric pressure. It is created by using a compressor, which reduces the volume of air, increasing its pressure. This pressurized air can be used for various applications, such as powering tools, inflating tires, and operating machinery. When released, compressed air expands rapidly, providing energy for different tasks. It is commonly used in industries like manufacturing and construction, where it powers tools like air drills and paint sprayers. Additionally, compressed air is essential in many household appliances, such as air compressors for inflating sports equipment.