The terms are often used interchangeably, and admittedly there is some overlap. Yet, those two are indeed different roles.
PO vs PM - Product Owner Roles & Responsibilities - Edureka
Product managers are more strategic. They focus on the product’s vision, company objectives, and the market. Mainly, they are accountable for strategic roadmaps and business outcomes.
Product owners are more tactical. They translate the strategies into actionable tasks and work with cross-functional agile teams more closely to make sure they are executing on those requirements accordingly. In simple terms, they are responsible for iteration goals and delivering value to the customer.