What's the difference between syncing and pushing?

Syncing is the two-way conversation with your Supernote: tasks you add, edit, complete, reorder or re-file on either side show up on the other. Pushing is a separate, one-way hand-off: it copies an open task once into a connected task app (like Todoist) and then leaves it alone. Syncing keeps things matched; pushing sends a copy out. They have separate schedules in the Scheduling section.