In Appian process models, both End Event and Terminate End Event are used to stop a process flow — but they differ in how much of the process they stop.

End Event (Normal End Node)

It ends only that particular process flow path.
Other parallel paths (if any) in the process model will continue running until they reach their own end events.
It’s graceful — meaning the process instance completes only after all active paths have ended.

Example: If you have two parallel branches, and one reaches the End Event — only that branch stops, while the other branch continues execution.

Terminate End Event

It immediately stops the entire process instance, regardless of how many paths or sub-processes are still running.
All active nodes and sub-processes are forcefully terminated.
It’s useful in cases like errors, cancellations, or when a condition makes continuing the process unnecessary.

Example:If the user cancels an application, the Terminate End Event can be triggered to stop the whole process — even if other branches are still running.