Difference bettwen user and visitor


I am confused about the definition of user and visitor. Could you please verify?

Hi, I think you might find what you are looking for in the engagement reports Engagement report | Piwik PRO help center There is all information on new and returning visitors

Visitors - The number of unique visitors. Every visitor is counted once, even if they visit the website many times during the day.
Users - The number of visitors with the User ID.

Basically Users metric counts only those visitors for who the User ID was tracked.