There shall be a Commission of seven members, one of whom shall serve as Mayor. The commission shall constitute the legislative and governing body of the city and shall have power and authority, except as otherwise provided in this charter or by statute, to exercise all powers conferred upon or possessed by the city and shall have the power and authority to adopt such laws, ordinances and resolutions as it shall deem proper in the exercise thereof. In all cases where the word “Commission” is used in this charter, the same shall be synonymous with any other term used in any statute or federal law in referring to municipal legislative or governing bodies.