Hi Patricia, so a Project Manager is an organizational role, a professional role for a person whose responsibility is to manage a project or multiple projects. Project Managers are responsible for three key things: execution (delivering on time), budget (delivering within budget) & meeting project goals and objectives. Product Owner on the other hand is a role within Scrum (the most popular and widely used Agile framework). The Product Owner isn’t so much project focused, but more product focused and in particular owns the Product Backlog. They are basically accountable for prioritizing what gets delivered and they represent the end user or customer in the decision making process.
Kind regards,
Mauricio