Downpipe, a plumbing fixture that transports rainwater from the roof to the ground, is also known by different names. Gutter downspout, drainpipe, leader, and rainwater pipe are some of the synonyms for downpipe. A downspout is commonly used in America, while in the UK, people refer to it as a gutter or drainpipe. A leader is another term used in the plumbing industry, especially in the northeast region of the US. Rainwater pipes are also used interchangeably with downpipes. Whether you call it a downpipe, gutter downspout, drainpipe, leader, or rainwater pipe, one thing is for sure, it plays a crucial role in maintaining the structural integrity of any building or house.