The key differences between a product manager and a product owner lie in their respective focus areas. A product manager is responsible for the overall vision and strategy, focusing on the big picture and long-term goals, while a product owner is focused on defining and prioritizing specific features, ensuring that the development team builds the right features in the right order. Additionally, product managers have a financial focus, managing budgets and timelines, whereas product owners are more customer-centric, with a focus on meeting market needs. The roles also differ in their approach to agile methodologies, with product owners being closer to the daily stand-ups and development process. Despite these differences, both roles work together to bring a successful product to market, and understanding their key distinctions can help navigate disagreements and improve product development.