Action of Council shall be by ordinance, resolution or motion. Motions shall be used to conduct the business of the Council, in procedural matters, for elections conducted among Council members, and as otherwise provided in this Charter. Every action of a general and permanent nature and as otherwise provided in this Charter or by Council shall be taken by ordinance, in the manner hereinafter provided. All other action may be taken by resolution. No Council action shall be invalidated merely because the form of the action does not comply with the provisions of this section, if it is otherwise valid.