Suction is the process of creating a vacuum or low-pressure area that draws in fluids or gases. This occurs when the pressure inside a space is lower than the pressure outside, causing the surrounding material to be pulled in. Common examples of suction include using a straw to drink a beverage or a vacuum cleaner to pick up dirt. Suction is utilized in various applications, including medical devices like suction pumps for removing fluids from the body and suction cups that adhere to surfaces by creating a seal. Understanding suction is essential in fields such as engineering, medicine, and everyday household tasks.