That's what autopilot means to me, both look synonymous and their marketing also plays on that confusion. They could just call it "assisted driving" to be more honest.

autopilot has a technical meaning which this is totally compatible with, however it has a common meaning that diverges.

The common meaning has been derived from the technical and is affected by some common misunderstandings, such as:

autopilot flies planes all over the place and hardly ever runs into anything becomes autopilot is very safe and not autopilot doesn't run into anything because in the sky there is not very much to run into.

I guess Tesla should have named it something else, but this kind of mistake is quite easy to make and I would say is the norm if anything.

I heard about significant number of plane crashes with autopilot involved, however I'm 42 year old. Maybe meaning of the word was changed with new generation. How old are you?