All powers of the City except as otherwise provided in this charter shall be vested in and all matters of policy of the City shall be exercised and determined by an elected City Council of five (5) members who shall be elected from the City at large. In all cases where the word "Council" is used in the charter, the same shall mean and shall be synonymous with the terms "commission", "common council", "board of aldermen", "governing body", or "legislative body", or any other synonymous terms, as the same may be used in any state or federal law in referring to legislative or governing bodies of cities.