Attendees or participants? Contradiction in Scrum Guide / Sprint Planning?

hi Community,

I am learning for the PSM1 exam and trying to understand the nice distictions that seem to be so important.

I learned: attendees are passive, participants are active in a meeting.

Now, in "Sprint Planning", the Scrum Guide says "The PO ensures that attendees are prepared to discuss...".

Obviously, the distinction between attendees and participants is not as clear in the Guide as it is said to be in the exam?

Or did I get it wrong?

thanks in advance