Disappointment is the feeling of dissatisfaction that follows the failure of expectations to manifest. Similar to regret, it differs in that the individual feeling regret focuses primarily on the personal choices that contributed to a poor outcome, while the individual feeling disappointment focuses on the outcome itself. It is a source of psychological stress. The study of disappointment—its causes, impact and the degree to which individual decisions are motivated by a desire to avoid it—is a focus in the field of decision analysis, as disappointment is one of two primary emotions involved in decision-making.
http://en.wikipedia.org/wiki/Disappointment

Remorse is an emotional expression of personal regret felt by a person after he or she has committed an act which they deem to be shameful, hurtful, or violent. Remorse is closely allied to guilt and self-directed resentment. When a person regrets an earlier action or failure to act, it may be because of remorse or in response to various other consequences, including being punished for the act or omission. In a legal context, the perceived remorse of an offender is assessed by Western justice systems during trials, sentencing, parole hearings, and in restorative justice.
http://en.wikipedia.org/wiki/Remorse