There is nothing like power in itself. What we can experience is only the particular forms and effects of the power relations. Similarly, there is no single and universal definition of power. The concept of power embodies its various relations and aspects, such as power relations, the relationships between power and institutions, go- vernment, influence, authority, coercion, violence, manipulation, freedom. Attention is paid to each of these relationships and aspects. Their interconnections and differences are shown as well.