“26. It is settled law that principles of estoppel and res judicata are based on public policy and justice. Doctrine of res judicata is often treated as a branch of the law of estoppel though these two doctrines differ in some essential particulars. Rule of res judicata prevents the parties to a judicial determination from litigating the same question over again even though the determination may even be demonstrated wrong. When the proceedings have attained finality, parties are bound by the judgment and are estopped from questioning it. They cannot litigate again on the same cause of action nor can they litigate any issue which was necessary for decision in the earlier litigation. These two aspects are 'cause of action estoppel' and 'issue estoppel'. These two terms are of common law origin. Again once an issue has been finally determined, parties cannot subsequently in the same suit advance arguments or adduce further evidence directed to showing that issue was wrongly determined. Their only remedy is to approach the higher forum if available. The determination of the issue between the parties gives rise to, as noted above, an issue estoppel. It operates in any subsequent proceedings in the same suit in which the issue had been determined. It also operates in subsequent suits between the same parties in which the same issue
