Common transport refers to the various methods of transportation used by people on a daily basis. Bicycles, with seven letters, are a popular form of transport that is both environmentally friendly and cost-effective. Autos, with four letters, are another common form of transport, which are typically powered by gasoline or diesel fuel. Bikes, also with four letters, are similar to bicycles but often have more features such as gears and suspension. Lastly, cars, with three letters, are the most popular form of transport, providing convenience and comfort for long-distance travel.