Improper joinder and misjoinder, though often used interchangeably, have distinct meanings under civil procedure rules. Improper joinder occurs when multiple causes of action or claims are joined in one suit without a common transaction, question of law or fact, or compatible reliefs—leading to procedural confusion and potential prejudice to parties. Misjoinder, on the other hand, refers to the incorrect inclusion of parties—either adding those who have no legal connection to the dispute or omitting necessary ones. The best lawyers differentiate the two by first identifying whether the defect lies in the cause of action or the parties involved. To handle improper joinder, they seek severance of claims or separate trials under Order II Rule 6 CPC; for misjoinder, they apply to strike out or add parties under Order I Rule 10 CPC. Experienced advocates explain these distinctions clearly in court, emphasizing that such procedural errors do not affect the merits of the case and can be cured without dismissal. By promptly identifying the defect, filing a precise correction application, and maintaining procedural fairness, skilled lawyers ensure smooth case progression and safeguard their client’s substantive rights.