The capital of Finland, Helsinki, has a few synonyms that are often used to refer to the city. One such synonym is Helsingfors, which is the Swedish name for the city and is still commonly used by Swedish speakers. Another synonym is Stadi, which is a nickname for Helsinki that has been used since the early 20th century and is derived from the Finnish word "kaupunki" meaning "city." A third, less common synonym is Helsset, which is a combination of Helsinki and the Finnish word "aset" meaning "capital." Regardless of which name is used to refer to it, Helsinki is a vibrant and culturally rich city that is known for its stunning architecture and natural surroundings.