I don't think these terms are meaningfully different in the heads of most people.

I know autopilot in airplanes is a set of assistive systems which don't remotely pretend to replace or obsolete humans. But that's not typically how it's used colloquially, and Tesla's marketing benefits heavily from the colloquial use of "autopilot" as something that can pilot a vehicle autonomously.

You really think the defense wouldn’t have objected if the wrong term was used, or that the judge would allow its continued use?