Product management and project management are two distinct roles in business and technology. Product management focuses on answering the "what" and "why" questions by understanding customer needs, market dynamics, and business goals. On the other hand, project management focuses on executing specific projects by answering the "how" and "when" questions. While there are areas of overlap, collaboration between product managers and project managers is essential for successful outcomes. Clear communication, shared tools, cross-functional teams, and common goals are some ways to foster collaboration between these roles.