The vocabulary around daily standups and the agile ceremonies, roles, and artifacts that surround them.
A concrete, assigned change agreed on in retro — not just a complaint, an actual thing someone owns doing.
The meeting at the start of a sprint where the team picks which backlog items to commit to and roughly how they'll get done.
End-of-sprint meeting about how the team worked, not what it built — what went well, what didn't, what to change next sprint.
End-of-sprint meeting where the team demos what got built to stakeholders and gets feedback.