There are a variety of synonyms for the term "two seater bicycle." One option is a tandem bike, which generally has two seats placed one behind the other. Other possible terms include a double bike, a dual bike, or a two-person cycle. Some choose to call it a double-seater bicycle or a two-rider bicycle. Regardless of the name used, these bicycles are a fun and social way to travel and explore with a partner or friend. They are commonly used for leisurely rides and even for tandem bike racing. Whatever you call it, a two seater bicycle is a unique and enjoyable way to get around.