Motivation vs Goal Oriented Behavior
Major theories of motivation distinguish between implicit and explicit motives - the first refering to (relatively) unconscious, automatically operating motives, the second refering to motives and goals which are accessible for self-reports (McClelland, Koestner, &amp; Weinberger, 1989). Explicit motives are translated into conscious goals, whereas implicit motives influence spontaneous, uncontrolled, and long-term behavior (without goal-planning behavior).

Furthermore, 'Motivation' referes to a larger process (e.g., selective attention, comparison of set points with actual situations, the processing of situational incentives), where the translation into goals and actions only is the last part of a sequence of processing steps.

Concerning your question, I would say that 'goal oriented behavior' indeed is a subset of motivation, namely explicit motivation.



References

McClelland, D. C., Koestner, R., &amp; Weinberger, J. (1989). How do self-attributed and implicit motives differ? Psychological Review, 96, 690-702.

Schultheiss, O. C. (2008). Implicit motives. In O. P. John, R. W. Robins, &amp; L. A. Pervin (Eds.), Handbook of personality psychology: Theory and research (3rd ed.). (pp. 603-633). New York, NY US: Guilford Press.