The vocabulary around daily standups and the agile ceremonies, roles, and artifacts that surround them.
A team with all the skills it needs to ship something end-to-end, without depending on another team for every piece.
The person who owns the product backlog and decides what gets prioritized and why, based on what's valuable to users and the business.
The person responsible for running the ceremonies, clearing impediments, and protecting the team from process nonsense — not a manager, not a project lead.
A small, semi-autonomous cross-functional team, popularized by Spotify's org model — same idea as a scrum team, different label.
Anyone outside the immediate team with an interest in what's being built — a client, an exec, another team depending on the output.