Solothurn Frank is the official currency of the Swiss canton of Solothurn. However, the word 'Frank' is commonly used in Switzerland to refer to the country's currency, the Swiss Franc. Therefore, synonyms for the term Solothurn Frank would include the Swiss Franc or simply the Franc. Another synonym would be CHF, which is the international abbreviation used to denote the Swiss Franc. Other synonyms may include the Solothurner Franken or the Solothurner Franc, which are variations of the name used specifically within the Solothurn canton and its surrounding regions. Ultimately, these terms all refer to the same currency, which is widely circulated and coveted for its stability as a safe-haven asset.