Strategy: A strategy provides the broad contours of an organisation’s business. It will also refer to future decisions defining the organisations direction and scope in the long run. Thus, we can say a strategy is a comprehensive plan for accomplishing an organisation objectives. 
This comprehensive plan  will include three dimensions,  (i) determining long term objectives, (ii) adopting a particular course of action, and  (iii) allocating resources necessary to achieve the objective.

Policies: are general statements that guide thinking or channelise energies towards a particular direction.

Objectives: can be said to be the desired future position that the management would like to reach.

Budget: A budget is a statement of expected results expressed in numerical terms.