My answer to the second question is a clear “No”. For the ECB  6  BIS Review 106/2008  such a characterisation is totally misleading and irrelevant. Trading-off the achievement of price stability against other ambitions is not permissible, desirable or even feasible. The best contribution that monetary policy can make to the economy is to deliver price stability.
In doing so, monetary policy also contributes, in the most efficient manner, to economic conditions that foster growth, employment and financial stability. A central bank that is endowed with one policy instrument can only pursue one goal. Hence, it is not within the power of monetary policy to ensure the attainment of financial stability.